In an international tribes challenge, one survivalist must cope with menstruation in the middle of the African bush.

Lisa feels a need for speed as well a need for control of her anxiety when she becomes a pro kid go-cart racer.

After a young girl is struck by a car in an illegal street race, McCall tracks down the person responsible for the hit-and-run. Meanwhile, Dee contemplates the idea of following in her mother's footsteps to join the armed forces.

Judges Luke Bryan, Katy Perry, and Lionel Richie join host Ryan Seacrest for a special walk down memory lane in their hometowns while auditions in search of the most talented singers and musicians continue.

Hippocampus and Stupendous accidentally create an apex predator when they train an unruly group of town-children; Tyrannis mistakenly attends a rally that's against him.

When Moon gets rejected by his crush for the Lil' Preppers Practice Prom, he goes off-grid for the night and sees a mysterious figure who is revealed to be the long-lost Aunt Dirt Tobin who has been in hiding in a bunker on the Tobin property since 1964. The Tobin family teaches Aunt Dirt all about modern life while Moon copes with his first bout of romantic rejection.

Founder's Day in Port Haven brings up memories for Del, Alice, and Elliot. Kat finds herself caught between two worlds in her search for answers.

As Colter helps a young woman locate her free-spirited sister, he digs deeper into how the sister's last days may lead to a dark secret she unearthed in this tight-knit town.

Jon heads to Gilbert, Arizona to help an owner who has dedicated her life to a bar that has a dangerously dirty kitchen and an untrained bar staff.

Larry finds himself in Takahashi's crosshairs after a note is found in the men's locker room. Tensions mount when Larry and Irma's couple's counselor crosses a professional line.

With a new piece of evidence at play, Catherine Willows reopens an investigation from her past that never got solved after a violent attack left her hospitalized. Internal affairs begins questioning Folsom.

John Oliver discusses a popular internet scam, why it's easier to fall for it than you might think, and, of course, boner alerts.

McLaren has a lot to prove after last season. As star driver Lando Norris' car lets him down yet again, he starts considering his options.

Jabberjaw has an overactive cupid which makes her fall in love with everyone and everything.

Beth and John return home from a trip upstate and attend Jen's surprise birthday party, which turns out to be more surprising than expected. Beth reaches out to Ann during what may be the most pivotal time in Beth's life.

After being forced to take a desk role in the office, Flute decides to lead a double-life and become a dog-themed superhero named McSnuff.

Rick tries to find his place in a new world.

Emily confronts Clara about the painting, worried about the potential scandal for their family. Frederick moves forward with his investment in the silver mine, but Ross begins to grow suspicious of the Marquise.

Sleech and Klak treat a venture capitalist with an illicit time sickness and a great outfit.

In captivity, Aang meets a king with a taste for games. To find their friend, the siblings must navigate a dark tunnel - and put their differences aside.

The group closes in on the gang leader, Raaz, leading to a shocking discovery when they find him.

With the town under martial law, Dee and Geoff try to find Owen. Thea discovers a security unit at the police station, trawling through the footage of the protest, with Owen being singled out.