When the Pajanimals go out trick-or-treating, they return home with bags full of sweets. Their parents have told them to eat only once a day, but Cowbella can't resist temptation and consumes her entire bag in one go. Now Cowbella is so full of energy that it seems she may never get to sleep, so the Pajanimals visit Bedtime Bunny to try to find a way to calm her down.