After returning to the devil world, Pluie reports to Queen Raindevila that he may have found a piece of the "Saint Something Four" in the human world and pledges to obtain it without fail. As for Momoko, she’s already having a bad day when devils put her classmates into a deep sleep. She transforms into Wedding Peach and also learns to transform into a Fighter Angel. Her attack sends the devils off in retreat, but she is left wondering, what exactly is the Saint Something Four?