Big Thing: One House, Two Women

Mi-na works as a housekeeper at Seung-mo's house. Mi-na is being sexually abused by Seung-mo every time. She can't tell the truth to her boyfriend, Hyeon-goo, and is getting tired of Hyeon-goo, who only lives unemployed for her later years as an excuse for her job.

While Mi-na is out, Hyeon-goo invites So-hee to his house and enjoys. She forces So-hee, who wants to go to sleep, back to her house because Mi-na doesn't know when she will come back. However, while secretly meeting Seung-mo, Mi-na informs Hyeon-goo that she cannot enter her house, and Hyeon-goo regrets sending So-hee to her house. But this time, he invites Soo-yeong, a business traveler, to his house.