David and Barbara Jeans waited 16 years into their marriage to have kids, and their three girls don't show any mercy on the middle-aged pair. Andra, who is 4 1/2 years old, dominates the family with her selfish demands, tantrums, and violent outbursts. The combination of Andra and the three-year-old twin girls makes for a turbulent and chaotic existence. David's job as a salesman takes him out of town for five days out of every month and Barbara is left to fend for herself alone with the three terrors. She is at her wit's end and is starting to doubt her ability as a mother, and is feeling emotionally and physically drained. The Jeans family needs an answer to their problems fast.

Bryce and Jen Bullard are a Colorado couple who are struggling to manage a busy plumbing business and raise two unruly children. The Bullard household is chaotic, with work phones ringing off the hook and kids screaming late into the night. The Bullard boys, two-year-old Rylan and six-year-old Brycie, have full rein of the house. Jen and Bryce have very different views of parenting; Jen is more lenient, while Dad is quick to punish. In order for Bryce and Jen to gain control of their household, they must learn get on the same page with their discipline and follow the Supernanny method.

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.

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.

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?

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?

Robert and Evelina Gorbea have lost control of their family, and the power is in the hands of their two-year-old son, Adam. The toddler constantly latches onto his mother and explodes into ear-busting tantrums when he's denied her attention. He also refuses to go to sleep in his crib, often keeping Evelina up until the wee hours of the night. This monopoly of mom's time leaves Adam's siblings, daughter Meya (8) and son Demetrius (9), feeling neglected. Is Robert not helpful enough or is Evelina afraid to let her last baby grow up?

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.

Jason and Karen Collins live in Northamptonshire, U.K. with their four unruly children who run the house by mob rule. Ten-year-old Ben, Lauren (nine), Joshua (six) and Joseph (four) keep their stay-at-home mom on her toes all day. Dad Jason is the manager of a British bakery and often doesn't return home from work until 8:00 p.m. or later. Ben and Joseph, the oldest and youngest, are not only aggressive and destructive, but decide to be the first children ever to prove that Supernanny's techniques won't work.

The Burnetts are in over their heads. With five kids, including Zachary (8) and two sets of twins -- Joseph and John (3) and Michael and Molly (16 months) -- this is a family consumed by chaos. A self-employed, stay-at-home dad, Michael, is struggling to find a balance between work and family. Mom Joanne is a schoolteacher who comes home every afternoon to four needy toddlers who want all of her attention and a household full of chores that Dad has deemed "woman's work."

Homemaker Colleen Christiansen and her husband Chris, who works in insurance sales, have boys gone wild. Seven-year-old Corey and three-year-old Chase challenge their parents regularly with behavior that includes kicking, pinching, biting, backtalk and general disrespect. The boys can be destructive to the home, and the whole family has a tendency to shout. In addition, young Chase still uses a baby bottle.

Frank and Danielle Minyon are a young, beautiful couple. Frank works full-time as a medical software engineer and Danielle is a homemaker. They have two children, Frank, 7, and unruly Skyler, 3, who rules the roost with massive tantrums that ensure she always gets her way. Danielle had to quit her job to take care of Skyler when daycare refused to take her back. Danielle's grandma, Gigi, also lives with them, but she's taken to hiding in her room to avoid her great-granddaughter's screaming. Mom struggles to get the children up in the morning, by 8:00 a.m., Danielle's drained but has to spend the rest of her day chasing Skyler. By the time Dad gets home, an exhausted Danielle needs help, but Dad refuses to discipline his "little princess" when she acts out, and is harsh with his sensitive son.

Arthur and Cathy Webb are a dual-career couple who are juggling the demands of work, children and, most of all, sleep. They have three children - Josef, 6, Paige, 5 -- who has Down Syndrome -- and Madison, 2-1/2. With Dad away all week for his job as a management consultant, Mom is left to handle the three children alone. She has no structure to the evenings, rarely eats with the kids, and finds each night draining. Mom feels so guilty about leaving daughter Madison with a babysitter during the day that she allows the toddler to cling to her constantly. She cooks and cleans with one hand, holding Madison the entire time. Because of Paige's Down Syndrome, Josef refuses to play with her and calls her names. Bedtime is a joke. Often, Mom falls asleep before the kids, around midnight, and the kids all sleep in Mom's bed. Dad spends the entire weekend either sleeping or running nonstop errands, considering the latter his "family time." Mom is at her wits' end and wants Supernanny's help.

Cheryl McMillion is struggling to raise her three children on her own, while her husband, Jonathan, a National Guardsman, is serving his tour of duty in Afghanistan. However, while Dad is overseas, there's a battle to keep the peace on the homefront, as the boys -- Ryan, nine, Hunter, seven, and Garrett, three -- act out by fighting and yelling. Mom's had it with the aggression in her family, and turns to Supernanny for help.

Jo Frost visits Judy and Ed Larmer to address the destructive, out-of-control behavior of their four children -- John (4), twins Jessica (2 1/2) and Justin (2 1/2), and Joey (11 months). However, it isn't long before Jo realizes that it's the parents' constant fighting and bickering with each other that is the source of the family unrest.

American viewers are treated to Jo Frost's trials with a British family, Paul and Denise Cooke and their daughters, Meghann (9), Gabriella (6) and Erin (4). The girls are bright and creative, but arguments with their parents regularly turn into shouting matches. Meghann in particular bosses her family around, terrorizes her sisters and can erupt at the drop of a hat. Her relationship with Denise is very stressful, and the family rarely ventures out in public together for fear of an embarrassing scene.

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?

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.

Tami and Shaun Keilen are living the American dream. This former Navy SEAL and his beautiful wife have a successful family business and four gorgeous children. However, this dream becomes a nightmare when the parents return home from work, as four-year-old twin terrors Maile and Malia run roughshod over Shaun and Tami. Well-behaved big sister Haeley (six) and docile baby brother Leighton (one) are lost in the shuffle, as the twins habitually take three entire hours to get dressed, screaming all the while. Tami devotes much of her home time to compulsively housekeeping, and Shaun, who can face any military challenge, can't hold his ground to the demanding twins.

Jo Frost returns to Britain to help kickboxing couple Stuart Lambert and Laura Bradbury with their three children: Matthew, 5, Tegan-Olivia, 2, and baby Diesel, 5 months. Matthew's aggressive outbursts leave Laura battered and bruised; he even gives her a bloody lip when he punches her in the mouth! As the stepfather, Stuart is desperate to discipline the karate kid, but Laura won't allow it; instead, the family is split down the middle with Stuart taking responsibility for his daughter and Mom fighting to control Matthew.

When Elizabeth and Bob Tsironis' twin boys, Teddy and Nicholas, were born, they only weighed a pound each. They beat the odds to become healthy, strong, three-year-olds, but their parents are so grateful that their miracle twins survived, they completely spoil the rambunctious toddlers. Nicholas even has a broken leg from Teddy pushing him off the bed! Meantime, big sister Kate, four, is sometimes overshadowed by her brothers' pandemonium. She copes by compulsively lying about painful foot cramps to get attention -- everything stops in the household when she is "stricken." She also manages to have the twins get blamed for her own misbehavior, but her parents have no idea they are being duped.

Cheryl Carsley is a harried single mom with five children, including two sets of twin boys. She's in school full-time, training to be a teacher, but at home her kids -- Chantal, 7, Nicolas and Caleb, 5, and Bobby and Elijah, 4 -- rule the roost. The house looks like it hasn't been cleaned in years, but worse than that is the way the kids treat their Mom and each other. A bitter divorce has left the children emotionally scarred; they hit their mother, scream at her, fight with each other and throw fits. The kids don't listen or treat Cheryl with respect, and every technique she has tried has failed. On top of this, how can a single working mom find one-on-one time with each child?

Cathy and Steve Schwartz both work full-time and Catherine's sister, Donna, who lives just a block away and raised Cathy after their mom's death, is the main caregiver for their four rambunctious Schwartz children. There's baby Emily, 1, Katelyn, 3, Amanda, 4, and Samantha, 6. From morning to night, no one wants to discipline the children, and any attempts made by the parents are thwarted by Donna, whose refrain is, "They're just kids." Mornings are a study in chaos, as Mom plays short-order cook to the girls, racing to get to the older ones on the school bus and herself to work on time. Plus, though she's 3-1/2, Katelyn still isn't potty-trained. Dad says that keeping the girls in line is harder than his job as a city cop, and Cathy despairs that the girls consider Donna more their mom than herself.

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.

Sherman and Joelle Young work opposite shifts at their jobs, with Dad watching the kids during the day while Mom works, and then handing them off to Mom before going to work at 4:30 p.m. They barely see each other six days a week. Well-behaved oldest child Dylan, 13, is often pressed into service as a babysitter or overshadowed by his siblings, Shermie, 5, and Shelby, 3, who are literally climbing the walls. Shermie is rambunctious, disrespectful, aggressive and hits his mother. During timeout, he'll run all the way out the door and up a tree, and Shelby is no better. She's apt to pull every book off the house's shelves when angered, eats dinner in front of the TV instead of with the family, and both tykes refuse to stay out of Dylan's room. Joelle copes by yelling a lot, which the kids ignore, and Dad has no idea how to engage with his children.