Mouse and his favorite human set out on a shopping trip which soon becomes an unexpected adventure.

Mouse draws an adventure comic that inspires him to become a superhero.

A sock makes a good Mouse-sized sleeping bag, so he invites all of his friends to a campout; Mouse goes on a surprise-filled crosstown journey in search of Oliver's missing sock.

A stick inspires Mouse to create his own sport, hoopla; when Mouse starts drumming in the yard, the whole gang jams along.

A bath inspires Mouse to captain his own raft; when he goes to the store to get bubble bath, Mouse discovers that it is closing.

When Moose enters his pie in a pie-tasting contest at the town fair, Mouse decides to join him; Mouse and his friends experience unexpected adventures during their day at the beach.