Shosuke Seiya is a habitual latecomer who goes to school in a T-shirt and looks like a drowsy and unreliable junior high school student. One day, without going to school, he went to take the idea test of Seishin Shoji, and after a fierce battle with his rival, he passed and became a special employee. Shosuke, who was expected to have talent by the president, was dispatched to a decisive battle with Marutomo, a powerful competitor of the supermarket Seishin, which is managed by Makoto Shoji. Saikyo Supermarket also joins, and a huge strategic war between stores begins.