Angela and Forrest An-Duan have their kids completely overscheduled with over 40 activities a week for the five young children: Christopher, 9; Isabella, 7; twins Lawrence and Benjamin, 6; and Charlotte, 4. The parents feel that they're helping their kids by exposing them to so many lessons -- Chinese, chess, art, piano, tutoring, violin, tennis, Scouts, math class, music appreciation, writer's workshops and more -- but instead everyone is exhausted and stressed out. Often Mom resorts to having the kids eat dinner in the car, and the children don't get to bed until 10:00 p.m., when they've finally finished their homework. The three boys rebel by hitting, punching, kicking, spitting, pulling hair, talking back and picking on their sisters; discipline is non-existent, and the oldest child, Christopher, is in a power struggle with Mom. The parents are so overwhelmed that they've delayed moving into the beautiful new home they finished building six months ago!

Parents Shawn and Tammy Orm have lost control of their three sons. Eight-year-old Chandler talks back to his parents, six-year-old Caden has a nasty habit of beating up his younger brother, and three-year-old Declan is quickly learning to emulate his older brothers' bad behavior. Stay-at-home mom Tammy is a softie and refuses to discipline her boys. Video technician Shawn takes a tougher approach, often yelling at his sons, but that doesn't curb their naughtiness either.

Meet the Schumachers, the ultimate 21st century American family -- hard-working parents who strive to give their beautiful children everything--everything, that is, except boundaries, responsibilities and goals. So, instead of gratitude, the kids have attitude, in abundance. The oldest, Jessica (14), belittles her parents for not giving her more expensive things and having a bigger home (their house is quite sizable, but she calls it "a dump"); Alexi (11) is constantly online with a social networking site, pretending to be older and chatting with strangers. Dylan (7) is bored, so he amuses himself by cursing, obscene gestures, hitting, spitting, kicking and punching. Parents Teri and Brian can't understand why their kids treat them like servants and complain so much.

Jo tries to help a married couple in Illinois with five children, including an openly defiant teen and a 4-year-old with separation anxiety.

Traveling to a secluded island off Seattle, Jo meets Rikki and Jenye Young, who forego discipline in a misguided attempt to compensate for uprooting their three young sons so often. After four moves just this year due to Rikki's sales work, Nicco, 6, Makai, 4, and Crew, 21 months, are out of control -- and Rikki and Jenye are at their wits' end. The boys run wild in and out of the house, and sometimes their safety seems in jeopardy. Rikki can't sleep because little Crew consistently wants in his parents' bed. And when Dad occasionally tries to inject some discipline into the boys' lives, the result is explosive tantrums. To make matters worse, Mom's first instinct is to comfort her children, not to stand firm with her husband. With a fifth move looming, Rikki and Jenye increasingly worry about the long-term effects of the family frenzy on their sons' lives.

While Marine Major Chris Merrill is stationed overseas for a year in Afghanistan, Mom Beckie, 33, is fighting another battle on the home front with their four young children. Garrett , 4 and Elena, 4, are cousins they adopted from Guatemala; Eddie, 6 and Lydia, 4, were adopted just three months ago from Ghana. Beckie tries to balance her desire for attachment with all the children with the firmness required to discipline them. Eddie and Lydia, the newest family members, grapple with frustration over still learning the English language and a great fear of the dark, since in Ghana there were real-life fears of violence at nighttime in their community. All the children feel free to run outside at will and ignore Mom, bedtime is fraught with turmoil, and mealtimes can be a battle zone. Compounding these challenges is the fact that Mom, at times, feels overwhelmed, outnumbered and at her limit, and very much on her own while her husband is away.

Insurance salesman Fred Weston and his wife, Andrea, a homemaker and schoolteacher, are a loving, hardworking family with a big problem - a ferocious four-year-old named Andrew. Little Andrew rules the Weston house, and it's a reign of terror. He topples lawn furniture, calls his mother "Poo-poo" and bullies his eleven-month-old brother, Sean, in countless ways. Well-intentioned Fred and Andrea find themselves at their limit. They acknowledge that their tactics have been futile, but how to break the cycle and regain control?

Deirdre and Trae Facente don't know how to integrate their autistic son, Tristin, into their daily life with their twins, Kayla and Marlana (4). Tristin is completely non-verbal, caught up in his own world of spinning, jumping, swinging and, often, taking off his clothes. The parents are at a loss as to how to help Tristin come out of his zone and join the family. Supernanny teams with world-renowned autism expert Dr. Lynn Koegel to teach all the Facentes inclusion and communication techniques to help engage Tristin.

Nicole and Nate Beck are classic tag-team parents. Nate works full-time and Nicole stays at home, works part-time AND is a full-time student. Add to the mix three boys -- Hunter, 9; Pierson, 5; and Bronson, 3 -- who offer huge challenges. The youngest has just been expelled from pre-k, spits at Mom and calls Supernanny a curse word; the oldest has attention-deficit disorder, and homework time hangs like a black cloud over each day as the yelling just escalates; and the middle son is extremely stubborn and contradictory.

John and Melora Wischmeyer are a hard-working couple with three children. John works long hours as a civil engineer, and Melora took a marketing job where she could work at home to enjoy time with her children. However, the time spent is anything but enjoyable. Their four-year-old twin daughters, Alaia and Ashlyn, do everything in their power to control their parents. During the day, Alaia hits, screams and is downright defiant. Any discipline Melora tries to dish out, Alaia simply ignores. When nighttime arrives, it's Ashlyn's turn to act up. She adamantly resists bedtime and repeatedly runs out of her room, throwing things and having wild tantrums. Complicating the issue is nine-year-old son Jared, a quiet, smart boy who often is punished for his sisters' misbehavior and is becoming increasingly frustrated by this situation.

Vicki and Aaron Newton are separated, with joint custody of their two sons, Aaron (12) and Kobe (5). Though the boys are angels for Dad, young Kobe saves his worst behavior for Mom. He is violent and destructive -- hitting, kicking, slapping, punching and swearing. He even throws rocks at Jo's head. Aaron isn't physically aggressive, but he does talk back to his mother. For the first time, Jo Frost observes life in two homes to hone her recommendations for each parent. But can she get them to collaborate on their child-rearing techniques?

Jo returns to the UK on a mission to save the Williams family from absolute mayhem. With four children under 10, life is hectic and stressful for mom Natalie and dad Martin. Natalie does the majority of the childcare while Marin sits on the computer and watches her struggle. The strain the kids put on their parents' relationship leaves mom and dad arguing constantly about how to raise them. Natalie is at the breaking point, and Supernanny is her last hope. But it's not only the children who need disciplining--Martin is in for a shock too!

Bill and Stacie Bailey have demanding jobs and an even more demanding family. Bill is a police officer, and Stacie teaches at the local elementary school. But when they return from long days on the job, the real work begins - raising Billy and Jadyn, ages two and six. "Billy can be very sweet - then there's the devil," says Stacie referring to her son's epic tantrums. Daughter Jadyn, according to Stacie, is "already hitting the moodiness of puberty," plus the youngster has a major sleeping problem. She sleeps everywhere but her own bed, preferring her parents' room or even the hallway floor! Will Bill be able to police his children's behavior? How can educator Stacie teach her children respect and discipline?

Brenda and Bill Dostal think that the problem is with their misbehaving son, but Jo quickly realizes he's just acting out due to Mom and Dad's problems. Five-year-old Zachary literally chases Mom around the house trying to claw her when she attempts the timeout technique. Her arms are bloody after his attacks! His little sister Erin, 3, is overshadowed by Zachary's outrageous behavior. Bill blames Brenda for not controlling Zachary, and Brenda doesn't trust Bill to curb his own temper when dealing with the children. As a result, communication between the parents has shut down, and Zachary is so naughty that play dates are fraught with trouble. Brenda fears her marriage may not last if they don't get help.

A trip to Kissimmee, Florida, is no vacation for Supernanny Jo Frost as she finds the Fernandez family falling apart. Former high school sweethearts Jerald and Marla married young and now, years later, their relationship is in trouble. That's largely due to their inability to control their defiant 12-year-old daughter, Desiree, and two overly aggressive sons, Elias, 5, and Eulisis, 3. Mom's completely exhausted from trying to do it all, while Dad's frustrated and often unwilling to step up to the plate. Meanwhile, Desiree's developing a bad attitude and her grades are plummeting. And Elias and Eulisis are learning the wrong lessons -- that kicking, screaming and crying pay off to get what they want.

Scott and Jennifer Ririe have their hands full with their four children -- daughter Selia (9) and sons Hallden (7), Blake (3), and Broden(1). Scott and Jennifer have two completely different outlooks on how their children should be parented. By far their most troublesome child is the reckless and defiant Blake. Every time Jennifer looks away, he makes a beeline for the front to play with a neighbor friend. In public, he refuses to stay with her and runs off constantly; and when she chases after him, she leaves her other children unattended. While Jennifer is fearful for Blake's safety, Scott doesn't have a problem with this situation, often laughing it off. The parents also disagree about their children's eating habits.

Jo has her most fiery face-off ever with a checked-out mom who has let things go for too long at home. Lisa and Steve Daniels have six beautiful children ranging in age from 2 to 13, but the pretty picture ends there. Chaos rules, not the parents. Spitting, cursing, hitting, nasty threats and general misbehavior are commonplace among the kids. Mom thinks her middle daughter, Alexus, acts like "a wild animal" and pegs her oldest daughter, Halley, 12, as the biggest culprit. But Halley is often reacting to Alexus' taunts, and seems to be held to a higher standard than the other kids, being the only child to have chores assigned her. Meanwhile older brother Josh, 13, just retreats into his room for computer games while his five sisters act out, and Mom ignores the bedlam. Dinnertime is a free-for-all of food fights, random noshing and family members scattered about, while the dining room stays empty. The kids are so out of control that the parents have given up on trying to manage them or teach them otherwise.

Pop star Wendy Wilson and her husband, Dan Knutson, make history as the first celebrity parents to enlist Supernanny's help. Wendy, who rose to fame as part of the multi-platinum trio Wilson Phillips, is now a stay-at-home mom working on being the best mother possible after having four sons in five years. As the daughter of Beach Boys' Brian Wilson, she was raised in a household where the children had few boundaries, and is often a pushover with her rambunctious toddlers, Leo, 4 and Beau, 3. Husband Dan, a former rock singer, was raised just the opposite way, with clear-cut rules and a strict schedule. Having had twins Willem and Jesse just six weeks prior to filming, Wendy and Dan are exhausted, overextended, and realize that their current parenting style won't work.

"It's musical beds," the sheepish dad, Kyle, admits about his family of five, and the parents haven't slept in the same bed in eight years! Jo actually tucks mom into bed with two of the kids during observation time, and later says it's amazing the couple ever had three children, considering how little time they have alone. Stay-at-home Mom Christy drags through the day, too timid to enforce boundaries or discipline for fear her children won't like her, and too detached to engage her lively young girls, Ellie (10), Emma (6) and Cara (4), during playtime. The walls throughout the house are covered with the kids' graffiti. Live-in grandma "Memaw" has little privacy, as her grandchildren troop in and out of her rooms with no respect for her belongings. In addition, four-year-old Cara still uses a pacifier because Christy is prolonging her youngest's babyish tendencies.

It's a full house for Reverend Browning and his industrious wife, Bernadette, as they try to maintain peace in their well-appointed suburban home where the six children range in age from toddler all the way up to college age. Mom is so busy running her real estate business from home that she doesn't have time for the kids. Mom and Dad want their home to be a sanctuary, but it's becoming a battleground.

Dorothy and Kip Baulisch of Papillion, Nebraska, are deaf parents raising four hearing children. They rely too heavily on their eldest daughter, Melissa (18), who understands sign language, as a surrogate "hearing" parent, and it's put a huge strain on her relationship with them. She's giving up her youth to be a full-time interpreter in her own house. The three youngest daughters are nightmares -- Jessica (8) and Jennifer (7) challenge their parents to the point where they simply give up trying to control them; the youngest daughter, Kristin (5), ignores her parents completely because she can't understand what they're saying, and constantly throws temper tantrums. On a typical evening in the Baulisch household, it takes Kip and Dorothy at least three hours to get the younger girls to bed, as they run amuck through the house, refusing to settle in.

The oldest Park child, Kyle, 6, has attention deficit hyperactivity disorder (ADHD), but his parents took him off medication when they didn't feel it was working. So he terrorizes his nanny, Alejandra, who cannot control him, as well as his younger siblings, Farley, 4, and Pierce, 2. All the children act out, refuse to follow instructions and take dangerous risks, such as playing in the swimming pool when it's forbidden, but the parents, Heather and Michael, are clueless about establishing control or maintaining boundaries. The kids not only smack each other with abandon, but hit their parents and Alejandra at will.

Debra and Tracy are pushover parents with two sets of twins, ages four and seven, who call all the shots and eat a diet packed with sugar and unhealthy food choices. Four-year-old Parker calls Mom a "butthead" with no consequences; Debra hides in the bathroom to eat a meal and get a moment's peace. Dad Tracy works from home, and when his rambunctious children need disciplining, he meekly implores them not to misbehave. They respond by locking him out of their bedroom!

Michael and Lorraine Amaral own a restaurant and work seven days a week, leaving them no time for their three "rough and tumble" boys: Ryan, 9, Logan, 4, and Kade, 2. Mom's at her breaking point, trying to juggle work and family while the kids run amok in the restaurant like it's their own personal playground. It's driving everyone crazy, especially the employees -- who are also expected to babysit! Can Supernanny put this family back on track and help them find some balance between work and home?

The Silvas are a "Yours, Mine and Ours" family spiraling out of control. Tom and Danielle each have two children from previous marriages, and they have three children together -- the age range is six months (Caden) to 17 years (Meghan). Tom works all week away from the family in the Army National Guard, and soon he'll be deployed to Iraq for a year and a half. In his absence, Danielle, who is very disorganized, allows the children to run amuck. The kids curse openly with no consequences, and there's a lot of negative talk from the parents, which has trickled down to the kids as well. Dad and Meghan's relationship needs repair before he leaves for the war, and Jo senses that Danielle is presenting a false "June Cleaver" persona.