The arrival of a strict substitute teacher convinces Miss Nelson's students that they must find their cheery and hitherto unappreciated teacher and bring her back to school.
Junie B. is having a run of bad luck, losing every game at the school carnival. When she finally wins the Cake Walk on her last ticket, she chooses a fruitcake as her prize. But who in the heck knew that sparkly foil-wrapped fruitcake was really a lethal weapon in disguise?