Chip, an invisible boy, and his friends solve the mystery of who took the school ball from the playground.

Preparing for picture day at school by choosing just the right outfit, Nancy wonders how she should style her hair and considers pigtails, a bun, and long ringlets before formulating a plan that has her reaching for the scissors.

Splat the cat's bicycle bumps and jumps over the bumpy track on his way to school, until . . . crack! Splat takes a tumble off of his bike and finds himself nose to beak with a duck. When the duck does not make a sound, Splat packs the duck in his backpack along with his school supplies to his teacher, Mrs. Wimpydimple, who will know what to do, and heads off to Cat School.