Dreaming of filmmaking, a passionate high schooler pushes aside all obligations to create short films, inspiring a studious but passionless classmate. Their deep bond eventually turns romantic, but they are abruptly separated when he is forced to move overseas. Years later in their thirties, their lives have completely swapped: she is a disillusioned, struggling TV reporter, while he has become an award-winning director. When a sudden reunion brings them face-to-face, he resolves to help her rediscover her lost spark, but she still harbors deep resentment over his past disappearance.

Gu San-yeong is possessed by an evil spirit after receiving a relic of her dead father. She meets Yeom Hae-sang, a folklorist who can see ghosts and spirits, and enters a completely different world from what she once knew.