Choi Taeshik lives a quiet, normal life. He works hard at the office, takes good care of his body, occasionally goes on date and tries his best to be a responsible adult. One day, two sisters down in their luck show up outside his work and ask for a place to stay. Even though he finds out they are old family friends, how can Taeshik live with two girls? Just the thought makes him uncomfortable. After originally agreeing to let them stay for one night, one of the sisters tempts Taeshik with a mutually beneficial offer he cannot refuse! Will Taeshik be able to successfully navigate the sudden in addition of two tantalizing roommates?