Ritsuki Eizen is a boy who has been obsessed with his female friend since middle school but all expressions of his feelings were rejected many times. He felt sad and angry so he decided to confess in another way. When he was 22 years old and 190 cm tall. He kidnapped a female friend who had just had an accident with a broken heel on her left leg and took her to his secret bunker to hide her whereabouts. All of his workers are troubled humans who serve him to survive.