Fate and the others are thrust into battle in an ancient Galian city hidden beneath Hausen! Against Myne, who has unleashed the full power of her mortal sin skill of Wrath, Fate hatches a desperate plan. Borrowing power from Luna, he enters Myne's mental world, finding Myne as she was during the Galian era. As they journey through her past, what will Fate discover within her...?!