Castaways compete in their first individual immunity challenge in the game. Also, Erika has been on Exile Island for two days, where she must make the biggest decision in the game thus far.
Sofia brings out Tom's adventurous side which ignites Marina's jealous side. Meanwhile, Sarah and Denise learn that Shamiah has been confiding in Connor instead of them, leaving them no choice but to take action.
When the Muldoons push to close the investigation, Ambrose refuses, pushing Sonya to the brink.
Senior Night is upon William Penn Academy, and Beverly soon discovers she is missing out on the ceremonial adoration presented to mothers with athletic children. Much to Adam's embarrassment, Beverly pushes for her moment to shine with a kiss and a rose and encourages Principal Ball to establish a Non-Athlete Senior Night. As Adam attempts to foil his mother's plans, Erica finds herself lacking any interested friends to appoint "pre-wedding fun captain." Reluctantly she engages her eager "sister-in-law to be" Joanna, who inadvertently doesn't meet expectations but ultimately proves herself worthy of being called sister.
Gallo clashes with the new lieutenant temporarily filling in for Casey. Severide closes in on a dangerous and deadly arsonist.
When Ryan makes Gotham’s “30 Under 30” list, Luke worries about how Marquis's involvement in Ryan’s rising popularity as Wayne Enterprises’ acting CEO will land with Jada. Mary returns from a late night out not feeling quite herself, while Alice’s hallucinations grow stronger. And when Sophie’s sister, Jordan, goes missing, she and the Bat Team quickly realize that Freeze’s missing weapon hasn’t been fully contained.
Cory worries that as the game gets more cutthroat the Vets might turn on him. Players compete in the “Sunken Intelligence” mission, where one player’s lack of effort sinks their team’s chances of winning. One player’s loyalty is tested by a new bond.
As Kim’s campaign for a car coincides with the need to take Grandaddy Clisby’s keys away, Bill proposes a solution that is only pleasing to him: Kim can drive, so long as she takes her grandfather and Dean around town. Later on at the mall, Dean is worried about seeming uncool when Clisby ends up chaperoning him and his friends, but Clisby has a few crowd-pleasing tricks up his sleeve.
Darlene worries about Mark making friends at his new school; Mark turns to Ben for personal advice; Becky finds herself thriving in college and starts thinking about her future plans.
When the Legends arrive in Chicago, they come across a speakeasy that caters to a diverse crowd, however their presence results in upsetting a mob who in turn burn down the club. Wanting to make things right, Zari demands they help to fix the club by throwing a party, with a special performance by The Bullet Blondes, to help raise money to rebuild it. Coincidentally, Astra, Spooner and Gideon are also in Chicago and feel compelled to help a female musician sever ties to the mob, while also trying to reach the Legends.
Maggie is enjoying success at work and new love in her life, while Gary learns he needs to let go of his past. Rome experiences a curveball with his film and Regina deals with drama of her own.
The singers from "Group B" return to the stage in a special Thanksgiving-themed episode and the final wild card enters the competition. Joel McHale is back as a guest panelist to keep Ken in check.
Savage Crew and Dirty Hands race to the Irwindale Speedway in Los Angeles, where they must work together to be the fastest team to complete a race car pit stop.
Witness the creation of the waterhole, one of Africa’s greatest wildlife meeting places manufactured by giant elephants and tiny termites. From baboons to dung beetles to chameleons, an entire community of creatures call the waterhole their home.
Lisa sounds off on her support of Erika and expresses remorse about how she's treated friends in the past; Garcelle and Sutton hold Erika accountable for the threatening comments she made this season.
As Grissom and Sara close in on who framed Hodges, the CSI team investigates a lock room murder mystery at 30,000 feet, when a cargo plane lands autonomously at McCarran Airport and everyone on board has been killed.
As the team works to bring down a drug ring, Voight builds trust with a new informant. However, it soon becomes clear she has a plan of her own.
Hattie, a queer African American woman, hangs out with her two straight best friends Mari and Nia, in Los Angeles as they try to figure out life, love and the professional world.
With her biological clock ticking, but not yet ready to have children, Rachel decides to freeze her eggs. Terry tries to make his Bradshaw Bourbon appeal to a younger crowd by getting an earring, waxing his back, and buying a Lamborghini.
A heartbroken Lindsay tries to take her mind off Austen, while Gabby tries to make it known that she’s into Luke. Meanwhile, Kyle gets his priorities in check when he can’t find Amanda, afraid she’s left the house for good. Finally, sparks continue to fly as Austen and Ciara go on their first official date, making Paige green with envy.