Minami, the eldest of three sisters, is a beautiful proprietress who runs the restaurant left behind by her late husband. Naris, the second sister, is a veteran nurse, and Mint, the youngest, is a NEET. The three, who live in completely different environments, are simultaneously "scammed". In order to get revenge for herself and her sisters, Mint meets a legendary conman, Toku-san, in the park and uses her body to learn the basics. Mint's cosplay captivates men!