From the box cover:

Color matching fun with Bert & Ernie

You and Ernie get to help Bert sort out his bottle cap collection. Somehow Bert got all the caps mixed up, and even a paper clip from his paper clip collection got mixed in! Spin the spinner and match bottle caps to their identical caps on the gameboard. But watch out for the paper clip -- it keeps you from winning. The first player to get rid of all their bottle caps wins!