Eep wants to be part of the In Crowd, even if that means disowning her embarrassing family.

The mean-spirited new teacher at Eep's school pairs her with an oddball student named Lurk while Grug tries to homeschool Thunk to make him a hunter.

A dare contest makes Eep and Thunk do something crazy at the Watering Hole, and Ugga must overcome her fear of water to save them./Grug tries to fight the moon, but his efforts are in vain.

The snobbish new neighbors of the Croods, the Boors, get on their bad side, but the parents must put their feud aside when their offspring go missing.

Thunk unleashes his story ideas through shadow puppets, but the attention he receives is all but what he wanted.

Ugga's pacifist nature is renounced when she becomes a wild hunter, with very dangerous results.