The discovery of skeletal remains and a student card with Lee Ha Neul's name at Sopyung Lake marks a significant shift in the investigation. Kang San is heartbroken, fearing the loss of his brother. Meanwhile, Hye Kyung becomes suspicious of Tae Man's attention towards the boy living with Dong Ju. Acting as if she is unfamiliar with the boy, Hye Kyung accepts Kang San's picture from Tae Man but immediately visits Dong Ju's house, bringing a mysterious gift. (Source: Viu)