The Story of the Expedition Woman (2019)
Original title: 원정녀 1호의 사연
The Story of the Expedition Woman is a 2019 Korean-language drama movie directed by Choi Sung-eun. It stars Yoo Jung and Si Hoo.
So-yeon is on a weekend date with her boyfriend, Ji-seok, and then she invites him to her house to save money on the motel. Her step brother, Sang-woo, comes home earlier than expected and sees them having sex. He records them secretly and plans to blackbail So-yeon with it.