Twenty-six-year-old aspiring novelist Jeong-yeon dreams of writing about true love, despite having never experienced it herself. One night, a stranger gives her a mysterious object that triggers surreal visions and unlocks her creativity. Suddenly, her unfinished novel begins to write itself. When she discovers that her roommate Na-jeong possesses the object, however, inspiration turns into obsession. Jeong-yeon steals it.