Because he has won the moss-ball game last year, Puff is in charge of organizing this Summer's Picnic. Only Puff isn't comfortable in that role. Mush-Mush, Chep and Lilit offer to help and make sure all the Mushables will follow Puff's lead. Gradually, Puff gains confidence and ends up bossing everyone around. Now, all the Mushables are about to flee the Picnic!