Arrested at the scene on suspicion of murdering bestselling author Jeong Sang-u (Lee Kiwoo), In-seon (Kim Minha) designates Min-ju (Moon Choi) as her assigned detective. Upon arriving in Hongcheon, where the crime occurred, Min-ju discovers that In-seon is actually a childhood friend from elementary school who drifted apart due to a serious incident. Although In-seon admits to ...