Kwon Heemang lives a reclusive life — no job, no friends, just a shut-in existence. But one day, after an unexpected accident, she gains the ability to see ghosts. Things get even worse when a spirit she meets at the hospital, Kim Sarang, latches onto her. Sarang promises to leave peacefully if Heemang helps her fulfill her lingering regret — which, as it turns out, is about a…