Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he finds himself transported to another world. As he's lost and confused in a new world where he doesn't even know left from right, the only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she's looking for.
A prequel story set seven years before the beginning of the Re:ZERO series. Emilia lives in a secluded forest covered in snow with the spirit Puck. The forest holds a secret: the elves who once lived there have been frozen into ice. Emilia is feared by the people living on the outskirts of the forest, but makes a humble living selling magic stones and warding off Magic Beasts. One day, however, her peaceful life is disrupted when the Great Spirit of Fire Melakuera decides to lay his judgment upon her.
A mysterious switch appeared one day. Upon pressing it, they were sent to a different alternative world!! There are also characters from other alternative worlds gathered together...!?
