When Gran moves into the cave with the Croods, she drives Grug nuts and embarrasses Eep in front of the first-ever group of cool kids.

Everyone loves it when Thunk uses shadow puppets to make the world's first movie ... until they see the end of the show.

When Eep becomes a veg-a-eat-ian, the family hunts for the biggest veggies they can find -- until something makes them go back to eating meat.

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

Grug won't let Eep join his winning team, so she forms her own group to play in history's first sports event.

Eep hunts for an elusive night mare but finds the night crazies.