Ruthie tries to hide her tattoo from her parents, not realizing that they already know something's up with her. Lucy knows about the tattoo, but she has a very specific reason for keeping it to herself. As it turns out, most of the Camdens have dirty little secrets that they'd rather not reveal...

Eleven teams from previous seasons take off on a new adventure around the world. The lively mix of teams includes a past winning team, a diverse of group of players and many familiar faces both hated and loved. The teams take off from the starting line at Miami, Florida and each takes one of two flights departing for Quito, Ecuador. Tension builds early on as one team lies to another about the arrival times of the flights. Once in Ecuador, the teams takes taxis to the Plaza San Francisco and then travel to Pim's Restaurant, three-miles away, where they receive one of three fifteen-minute staggered departure times for the next morning. That morning, teams make their way to the Hacienda Yarahurco in the Cotopaxi National Park, guided by a provided map and with the advice to head to the north entrance. Once teams arrive, they take part in a Detour that involves either searching for missing items from the uniform of a soldier or wrangling and then grooming a horse. Several teams find themselves at the wrong end of the massive park, a costly mistake for one team that ultimately leads to their elimination.

Documentary filmmaker, Declan Desmond returns and shows off his new documentary, Growing Up Springfield. The film documents and follows the lives of various Springfieldianites in eight year intervals.

The guys discuss what they want to pass on to their children, Bill becomes despondent because he doesnt have any. In an effort to cheer him up, they help Bill put together a Dauterive family reunion, only to be thwarted by the realization that Bill only has one living relative. Bill winds up sharing an incredible barbeque with his neighbors and teaches Bobby the secret sauce recipe.

While researching a paper about George Washington Carver in celebration of Black History Month, Steve uncovers a conspiracy that's been going on since the Civil War. When the curator of the Smithsonian Peanut Museum reaches out to tell Steve the truth, he's mysteriously murdered, and Steve and Stan are tracked by a secret society that will stop at nothing to keep this scandalous secret of American history.

The thirteen remaining candidates must launch a promotional sweepstakes for a travel Web site. Arrow got more people signed up for their sweepstakes for the win, in spite of Surya's bad leadership. For their reward, they were given private surfing lessons and were treated to a free brunch. Also, business became pleasure when Tim and Nicole sparked up a romance. Kinetic went to the boardroom, where Aimee was fired for her poor leadership.

When traces of an explosive are found in a house, the team re-opens the 1981 case of a married couple who died in the same house in what was then ruled as an accidental gas leak.

Special prosecutor Ivers continues his investigation into the practices of the morgue, and Macy asks Jordan once again to behave herself. Jordan and Lily go on a road trip to recover the body of a little person, but only to find it stolen from the back of the morgue's van. Woody finds the body of a 16-year-old boy and encounters a rogue cop during the investigation. Meanwhile, Lily wrestles with the impact her love triangle will have on her unborn baby.

While collecting his wife's belongings at the hospital, Ian accidentally comes across the ring Mike was about to propose to Susan with the night of his accident. Tom and Lynette prepare for the opening night of their pizzeria, but there is a mix-up with the chairs. Zach (guest star Cody Kasch) convinces Gabrielle that they had sex, and Gabrielle tries to get Carlos to scare him off. In the meantime, Orson's mother Gloria (guest star Dixie Carter) plots to kill Bree. At the night of the pizzeria opening, Susan and Ian become engaged, and Gloria makes her move.

When a bully harasses Chris, Peter goes to his defense, but ends up beating him up. Peter realizes bullying is fun and begins to bully everyone in the house. Finally, Chris stands up to Peter and beats him senseless. Meanwhile, Stewie goes out without sunscreen and becomes obsessed with getting a tan. After Brian leaves him in the tanning booth for six hours, Stewie gets sunburned and fears he has cancer. While waiting for the results of his cancer screening, Stewie begins to live his life as if he had only days to live and drives Brian crazy with his demands.

Tina's boss orders her to get the movie rights for Jenny's Lez Girls. Helena considers whether she should take up on Catherine's offer to pay off her gambling debt. Paige and Shane volunteer at Shay's school to teach the kids about tolerance. Meanwhile, Alice and Tasha take it slow, and Bette learns something about Jodi's past that puts kinks in their relationship.

Vorenus receives orders to plunge Rome into a bloodbath the likes that have not been seen since the dictatorship of Sulla. Octavia reveals her secret to Atia, and the armies of the Liberators and the Caesarians clash for the last time, with the fate of Republic in the balance.

When Harry is hired to help a young woman find her lost boyfriend, Harry finds himself embroiled in a battle over a Hellion's soul. Will Harry make a deal with the devil to protect the girl, or will he defy the council and double cross the devil to help the girl reclaim the mortal soul of her boyfriend?

Chief Tyrol and his wife Cally become trapped in a malfunctioning airlock. Adama remembers his late wife Carolanne as he marks his wedding anniversary. His relationship with President Roslin continues to become more friendly and personal.

Sarah and Joe go into therapy following the tensions of their marriage. An office poll unsettles Kitty about her relationship with Senator McCallister.
Tommy bumps into a concealed member of the Walker family while Tommy and Julia learn about a surprise addition to the family.

The team searches for missing water plant supervisor Jason Turner, and learn that he had become the target of a lot of anger after recent layoffs at the plant. Carlos comes to the office looking for Elena.