When Subaru Natsuki leaves the convenience store, the last thing he expects is to be pulled from his everyday life and thrown into a fantasy world. Things don’t look good for the confused teenager; shortly after his arrival, he is attacked by thugs. Armed only with a bag of groceries and a now useless cell phone, he is quickly beaten up. Fortunately, a mysterious beauty named Satella, who is chasing after the thief who stole her insignia, finds Subaru and saves him. To thank the honest and kind-hearted girl, Subaru offers to help her in her search, and later that night, he even discovers the location of what she seeks. However, unbeknownst to them, a much darker force lurks in the shadows, and just minutes after finding the insignia, Subaru and Satella are brutally murdered. But Subaru immediately awakens to a familiar scene—facing the same group of thugs and meeting Satella again—the mystery deepens as history inexplicably repeats itself.