Searching for more clues about Kira, Josuke and the others investigate his old house. But Kira's father, still alive as a ghost, is determined to protect his son and unleashes Atom Heart Father on them.

Josuke and Okuyasu encounter a weird boy named Mikitaka, who claims to be an alien. Possessing weird powers but no Stand, Mikitaka appears to be telling the truth as Josuke gets an idea.