Several generations of young girls are bestowed with the name, Pretty Bell. Their introduction to magic fighting stems from the potent Rin Rod, enabling them to summon mythical creatures and weapons to ward off the demon world. Angels, Milk and Cocoa are tasked with the mission to locate the next Pretty Bell. Unfortunately, their targeted candidate is middle-aged muscle-man, Takada Atsushi, who operates his own gym.
Oddly enough, Atsushi fits the bill rather capably. His physical prowess combines with his combat skills and magical ability, rendering him an unstoppable force. As hordes of demons repeatedly assault the new Pretty Bell, this unconventional hero must safeguard humanity.