When Phil invents a simple new game called ball-in-cup, everyone except Hope, can't stop playing it. But just when Hope thinks she's rid the farm of the game, she finds herself addicted to the game worst of all.
When a freak lightning strike turns Thunk into a genius, Phil is thrilled to have someone likeminded on the farm, until the farm residents start asking Thunk for help with problems on the farm instead of him.
Tired of the farm's feud with the neighbouring punch monkeys, Ugga arranges a punch summit where the Bettermans and Croods will stay in the punch monkey village to learn how to all get along.