Once upon a time, there was a young woman named Sora who was studying dance at college. She decided to take a break from her studies and go on a luxurious cruise ship that was docked on the Han River. Unbeknownst to her, she was in a coma while enjoying herself on the ship. When she woke up, she found herself confused and disoriented, as if she was in the underworld. However, she soon realized that she was not alone, as a savior had appeared to help her resolve the situation. Unfortunately, the underworld civil servant who was supposed to help was grumpy and not very cooperative. Despite this setback, if Sora could find her body within the next 49 days, she would be able to return to the living world. However, if she failed to do so, she would be classified as a lost soul and forced to stay in the underworld forever.