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.
Mouse is excited to go to school -- until he gets to the door; Oliver's class goes on a field trip to the local cookie factory.
Mouse hopes to help Moose regain his confidence after Moose's muffin recipe gets smudged; Mouse and friends find out that the local arcade is closing down for a month.
Mouse wants to have a room of his own; traveling across the park ends up being an Oregon Trail-sized adventure for Mouse.
When one of Oliver's toys breaks, the race is on to repair it; when their friends get sick at the same time, Mouse and Oliver decide they need a system.
Mouse and his friends make inventions for the Junior Inventors' Fair.
Finding carrots for Oliver's sandwich leads Mouse to discover where fruits and vegetables come from; Mouse and his friends join their human friends on a scouting outing.
Mouse and his friends turn the chore of cleaning up toys into a Wild West game; Mouse has wheels, but he may be too small to be a real hero.
Mouse and friends have fun sorting and recycling at the recycling center, but Mouse is soon whisked away on an unexpected wild ride; Mouse decides to use bottle as a piggy bank to save up for something special.
Dog's friends join him on a trip to the store, but a simple shopping trip becomes a day full of unexpected adventures; after Henry goes away to day camp, Dog's friends decide to cheer Dog up by creating a day camp experience of their own.
When Henry gives Dog a treasure map, Dog and friends set off to find the treasure; Dog wants to do something special for Henry's birthday.
Mouse uses a flashlight to find the seashell he has put aside to use as a toboggan; Mouse and Oliver go to Moose's place for a sleepover; Moose and Pig have big plans for the party.
Mouse is given a piece of chalk and draws sidewalk games and roads; he speeds around town in a souped-up miniature car to help his friends; when rain washes away Dog's sidewalk drawing, the gang must convince him that rainy days can be exciting.
Mouse makes a sculpture and Pig insists it belongs in a museum; they set off to find it a home; making a clay pizza inspires Mouse to invent his own creations at the local pizza parlor.