Grug tries to get out of doing chores and finds a doppleganger to do it for him. Eep and Thunk are tired of always losing at the hunter's fair so they decide to cheat.
Eep tries out and makes the scream leading team but falls under her coach's influence. Snoot's wife kicks him out and the Croods help him win her back.
Thunk babysits Sandy and a new neighbor and Sandy gets all the blame for bad things happening. Gran tries to toughen up Thunk because she thinks he is too nice to live into old age.
While on vacation in a utopia that seems to good to be true, the Croods find a family living there alone. The Croods need to find a way to warn Ahhh. Valley before it is too late.