Choi Yi-jae grew up in a poor family and didn't have a good start in life, so after failing an interview at a prestigious company, he was forced to take odd jobs for seven years. When he failed another interview, he became desperate and, leaving a suicide note stating that he wasn't afraid of death, he jumped off a roof. He thought his suffering would end there, but it didn't. Yi-jae finds himself in front of the gates of hell, where he is greeted by death itself, and learns that he will now die 12 times in different bodies as punishment. If he wants to avoid going to hell, he must try to survive.