Sato Yo, a high school student with a passion for SEGA games, headed to a nearby supermarket to grab some dinner. As he reached for a bento box, he suddenly lost consciousness. Upon waking up, he realized that all the discounted bento had already been sold out. This led Yo to stumble upon the competitive world of half-priced bento battles, where fierce opponents known as "Wolves" fought for their meal deals. Yarizui Sen, the leader of the Half-Pricer Club, persuaded Yo to join their team and become involved in the bento wars.