Lost

Kang Jae and Ttak Yi hold a small funeral ceremony for their friend. Boo Jung visits the police station amongst protests of harsher punishment for cyberbullying. Her mother-in-law finds out the reason for the police summons and in a panic consults Boo Jung's father. Boo Jung is preoccupied with thoughts of her strange encounter on the bus.

Lee Boo Jung is a forty-year-old home manager living a cold and hopeless life. She receives a summon letter from the police when someone sues her for cyber-bullying. This confuses and shocks her husband whom she is estranged from. Lee Kang Jae is a twenty-seven-year-old young man who runs his own stand-in escort business. He has been chasing after a friend who borrowed money from him then disappeared. He then recieves news that the friend has been found dead in a lake.