Florida, 2011. Framed for a DUI and imprisoned, young Jolyne gains a mysterious new power after receiving a bizarre item from her estranged father.

Jolyne gets acquainted with Green Dolphin Street Prison and her two-faced cellmate, Gwess, who has obtained Jolyne's locket and a pint-sized new Stand.

Jolyne acclimates to prison, but a mysterious boy delivers an ominous message before Jolyne receives a visit from her father and an enemy Stand user.

Father and daughter try to escape the visiting room's trap and the prison, but an enemy Stand extracts two discs from Jotaro. One holds Star Platinum.