One day, high schooler Kaito Kuji lost his memory. When he came to, he found the word "Thank you" written on his chest above a dial for a capsule toy vending machine. It's a mysterious capsule toy vending machine, which contains his lost memories and also some special supernatural abilities. But in order for him to turn the dial, he has to have someone tell him, "Thank you"...?!! So he needs to gather people's gratitude and use the toy capsule machine to fight!!