The story follows Bullet Girl, a highly intelligent fast food restaurant cashier, as she navigates through Oddland. Guided by a being without a name trapped in her head, she goes from one bizarre adventure to the next as she tries to find a way to free the being from her head and get home.
Bullet Girl enters the Detour, where she falls under the spell of a Lovenaut. Her consciousness awakens in a new world, where she is met by a mysterious, mushroom-headed guide.