Ada and friends follow their noses and discover the source of a bad smell: Arthur's tennis shoes. Taking a 'brain break' helps the kids solve a problem.
Ada and friends brainstorm ways to unlock the door to her brother's backyard fort. The kids use the scientific method to prove Mooshu Kitty's innocence.
A power outage zaps Ada's plans for the "perfect" movie night. Rosie's Great Aunt Rose is coming, and she loves banana bread so its time to get peeling.