This film is a remake of the 2010 Japanese anime film "Accidental Fortune". A homeless ghost suddenly finds himself in the body of a high school boy named Min. In the eyes of outsiders, he is a medical miracle, but this "parasitic soul" knows that this is a test from the god of death. He has to find the real murderer of Ming's death within 100 days, otherwise he will never be reborn! The "parasitic soul" uses every possible way to immerse himself in Min's world, feeling Min's family, friendship and love, and gradually discovers that there is another story behind Min's death...