In this world, Sensha-do, the military art of using tanks, is every bit as important to a yamato nadeshiko (ideal Japanese woman) as flower arrangement and the tea ceremony.

Nishizumi Miho is a new transfer student wanting nothing to do with Sensha-do. However, she is summoned before the Student Council President who forcibly enrols her in Sensha-do, with the ultimate goal of being part of the school's team in the National Sensha-do Tournament. To make matters worse, every single member of the team is eccentric.