Mina is a ferryman in the underworld without any memory. She lives in the underworld day after day and year after year, but she knows that there are things she cannot let go of. Recently, there have been many unwilling souls in the underworld who are unwilling to reincarnate. The King of Hell saw that she was fulfilling her duties and gave her an opportunity. As long as she fulfills the wish of the unwilling soul, she can get her own memory. In order to get her own memory, Mina started the mission with the 222 system. . . .