Guest: comedian Keegan-Michael Key.

Lex, Presley, and Munchy missed a Tedward payment and are desperate when they get KidDING'd by the worst girl in school to organize a dance-posal for a boy that Lex likes. The kids must decide whether love or money will win out.

Joe and Love try couples therapy, but their issues may need more than counseling - and their friction isn't the only thing they need to make disappear.

Rami Malek hosts with musical guest Young Thug.

Left behind but holding on, Niko and Cas each tangle with the Achaia in their own way. At the Salvare, the crew uncovers a key alien vulnerability.

Worlds collide - and tension boils over - when Mary Anne and her dad move in with Dawn and her mom. The BSC plans a major party for Mallory's sister.

Susie and Angelica disagree on how to use their newfound "super" ability to move things with their minds.

Outwardly, Olivia appears to be handling her parents' recent divorce quite well; but inside, she's anxious and overwhelmed. It doesn't help that her family's new place, her mother's childhood home, has squeaky floorboards, flickering lights and a seriously creepy vibe.

Chelsea starts exercising in hopes of breaking through writer's block. Jayden and Claire investigate Solana's suddenly strange behavior.

A determined Hansel and Gretel gather a small army of allies to take down the dragon that's been darkening the skies.

Two couples face this week's dance-off, and Westlife perform in the Strictly ballroom.

Zee worries that Zatara is lonely and volunteers to play matchmaker for her dad.

For months, Garth's been sending Aquaman letters that greatly exaggerate his accomplishments in Metropolis, so when the King of Atlantis comes for a surprise visit, Garth begs the Super Hero Girls to help cover for his little white lies.

Vivien is introduced to Colin Jordan's wife, dedicated Nazi occultist Francoise Dior. The fascists plan a deadly attack, and the 62 Group do everything they can and stop them.

Amy must help a skeptical performer, and her pair of matched liberty horses work together again. Jack unexpectedly buys Mitch's herd of cattle. Tim returns from his trip with a surprise for everyone.