After unravelling the mysteries of the Dark Hour, fighting epic battles through Tartarus, and all the unforgettable events of Persona 3 Reload, the S.E.E.S. members find themselves trapped in a never-ending March 31st.

When an unfamiliar android, Metis, suddenly appears at the dorm along with the mysterious "Abyss of Time", the team works together to uncover the cause of this strange fate..