The ultimate social experiment begins when seven beauties and seven geeks move into an enormous mansion in Los Angeles. After choosing teams, Brian explains the first challenge, where the women and the men must learn from each other to complete tasks. All of the contestants must rediscover the fifth grade; the women compete in a trivia contest, focusing on history, spelling, and geography. Meanwhile, the men learn dance moves from the women, who then must perform in front of a crowd of people, who judge who danced the best. Mindi and Richard win both of their challenges, ensuring them full immunity and giving them the power to nominate two other teams for elimination. At the elimination ceremony, Richard and Mindi send Eric and Cheryl and Joe and Erika to the elimination chamber, where Eric and Cheryl are eliminated.

Episode two brings strain to the game. some of the Geeks are already growing thin on the Beauties, and one pair in the house, Erika and Brad, begins a romance. The second set of tasks entails lots of oil the women must complete a series of tasks having to do with a car: popping the hood, and changing the oil, air filter, and a tire. The men are forced to brush up on massages. At the challenges, Chuck and Caitilin prosper, working as a team to win both. Fighting breaks out between the two because of Chucks inability to nominate anyone for elimination, but in the end, they decide on sending Erika and Joe and Brad and Scarlet to the elimination room. Erika and Joe lose the quiz, sending them home and ending the short-lived love between Erika and Brad.

The third set of tasks is one of the trickiest yet for both groups - the Beauties and the Geeks. The women must brush up on their rocket science and follow a series of instructions in order to assemble a rocket and launch it in the fastest time. Later, the men are taken to a series of stores in order to purchase three outfits - formal wear, swimsuit, and casual wear - for their partners to wear in a fashion show. The winners of the tasks, Scarlet & Bill and Chuck & Caitilin, choose two teams to go up for elimination. In the end, Krystal and Brad are sent home, both with tremendous boosts in confidence and skill level.

The competition heats up as the four remaining teams gear up for their new tasks. The ladies get to give the guys makeovers and the guys must go out and get phone numbers from total strangers. Tensions rise as a rivalry grows between two of the contestants, and when Chuck and Caitilin win the challenges again, they nominate Richard & Mindi for elimination for the second time, along with Lauren & Bill. The experience of having gone through elimination once already proves to be an advantage for Richard & Mindi, who survive, and Lauren & Bill are sent home.

For the first time, the individual couples must work together as a team to have a successful night of camping. The rivalry between Chuck and Richard reaches an all-time high, and the romance between Scarlet and Chuck seems to fizzle out because of the competitive fire in Scarlet. After a challenge in the wilderness, two of the teams are sent to the elimination room, where one team is sent home, leaving only two couples for the final task.

During the final day at the mansion, the teams spend more time getting to know each other, learning a skill that the other excels at - karate, cooking, kayaking, and piano - as one last thing to do with each other before the final elimination, a series of ten questions about your partner. By evening's end, one team wins a quarter of a million dollars, but both teams walk away with more knowledge and more confidence.

Beauty and the Geek's first season contestants gather in front of a live studio audience to discuss their time in the house, as well as what they took away from the experience, how their confidence has increased, and how their rivalries and romances have ended after the show has wrapped production.

Beauty and the Geek 2 begins with geekier Geeks, more beautiful Beauties, and lots of lessons learned, even in the first two days! After the eight new women choose a partner, the contestants move into the mansion, and quickly begin to bond. Josh finds himself filled with so much anxiety and insecurity that he cannot bear to sleep in his room with Cher but instead spends the night in the closet while Tristin reveals her own insecurities about wearing a swimsuit.

Beauty and the Geek 2 begins with geekier Geeks, more beautiful Beauties, and lots of lessons learned, even in the first two days! After the eight new women choose a partner, the contestants move into the mansion, and quickly begin to bond. Josh finds himself filled with so much anxiety and insecurity that he cannot bear to sleep in his room with Cher but instead spends the night in the closet while Tristin reveals her own insecurities about wearing a swimsuit.

The beauties and geeks continue with getting to know each other, but two couples are forced to meet more quickly than the rest when Chris and Amanda make their decision about which pair to switch themselves with. Later, the men face a karaoke challenge, and the women are forced to muster up the courage to give a speech about a political topic that they know very little about.

The women educate the men about interior design and decorating for the next task, while the men teach the women the technological aspects of computers. The women judge the geeks' newly-decorated rooms for the first task. After that, the beauties compete in a race to assemble a computer.

When the women give the men makeovers in order to improve their chances of winning the week's only task, the geeks come out looking much more presentable than they did, and their confidence soars. After the girls have stylists give the men haircuts, eyebrow and chest waxings, and find a new wardrobe, the guys are sent to a bar for a round of speed dating, where three women spend a short period of time with all six men and then judge them on their conversation, appearance, and all-around social skills. The women observe the dates and critique their partners from TV monitors.

The group travels to Las Vegas and plays strip poker, an infatuation develops between two contestants, and a couple is eliminated.

The beauties are forced to ask their geeks out on a romantic date, and later, the men set out on a photography challenge, making their partners feel comfortable as the subjects of their work. The relationship between Cher and Wes becomes more intimate, and at the end of the episode, one couple is sent packing.

The contestants make heartfelt videos for their partner, explaining what the partner means to them and what they learned from the experience of Beauty and the Geek. After the teams cherish their videos, they get to work on the next task, a joint scavenger hunt. The challenge involves each couple in thier own car with a driver; the women (without any help from the men) must navigate through Los Angeles to three different stores, where the men must then go into the store and choose the item that they think their partner has picked.

The two remaining couples are given some time to spend with each other and learn some of their hobbies. Josh takes Cher fly fishing while Joe shows Brittany his chess skills and tries to teach her the game. Later, Cher teaches Josh how to cook a meal as Brittany takes Joe ice-skating. After, the teams spend their last hours with each other, studying the ins and outs of each of their lives for the final quiz. In the quiz room, the pairs are surprised to learn that instead of the way the final quiz was orchestrated in season one, this one would be different: one person from each pair must answer a series of questions about his or her own interests and the other must try to match the answers.

The third season again unites a group of "beauties" with a gang of "geeks" for hilarious and heart-rendering results, and a prize of $250,000 to the winners.

The beauties must conduct an interview with an author while the geeks must perform stand-up comedy at the Laugh Factory. One team is eliminated at the end of the episode.

The beauties act as tour guides to visitors of the California Science Center museum while the geeks are required to draw sketches of a naked woman. One team is eliminated at the end of the episode.

The geeks are given makeovers and later offered up as bids at a live charity auction hosted by the beauties. One team is eliminated at the end of the episode.

The five remaining teams take a surprise trip to San Diego's Mission Beach, where the beauties must learn about radio waves and electronics while the geeks must put together their own fitness routines. One team is eliminated at the end of the episode.

The four remaining teams each get a dog; the geeks must get women's phone numbers at a dog park.

The final three teams get down and dirty at a farm where they must work with animals. Two teams face elimination, one team is eliminated, and the final two teams are revealed.

In the shocking third season finale, unexpected visitors threaten to jeopardize the status of the competition. Meanwhile, as the final two teams prepare for the final showdown, they reveal sides of each other that they've never shown before, and one teammate makes a decision that turns the competition upside down and leaves everyone in shock.

In this special reunion episode, the beauties and the geeks are reunited in New York, where they reminisce about their good and bad times in the competition, new never-before-seen footage is revealed, and updates on the lives of the contestants are shared.