After snobby neighbors move in next door and complain about a bone pile blocking their backyard view, the Croods start the first prank war ever.

Eep invites her friends over for the first sleepover in history.

Thunk saves the day when wacky beasts invade.

Grug is called a zombie after taking the world's first nap.

After neighbor Snoot's wife kicks him out, the Croods help him win her back.

Ugga joins the "nitting" club, but has trouble fitting in.

When the Big Chickuna invades the valley, all the residents evacuate to safety except for Bulk, whose rescue becomes a contest between Grug and Snoot.

When Grug loses his commanding voice, he and Ugga search for it. Meanwhile, Eep gets carried away while acting as the valley leader's spokesperson.