Ju-in Jeon, a depressed 17-year-old, is offered a ticket to heaven in exchange for her body. But, 13 years later, she wakes up. Not in paradise, but in her 30-year-old body and in the middle of a scam. Stuck for 108 days while heaven's agent searches for the fraudster, Ju-in crosses paths with Do-gwon Ju, another soul-scam victim in the same situation. But what happens when the souls who bought their bodies come back? Will they return to their miserable teenage lives, or find a way to reclaim their futures?