Hun, working part-time at the bar, crushed on the boss, Mr.Jang. But Mr.Jang always shows deep interest to a regular customer, Misuk. One day the moment to close the bar, Misuk comes in alone.
Yu Sang starts to learn to dance for the interview, but he can't hide his feelings from Jun Han.
Be My Boyfriend, a spin-off of the popular web series, Best Mistake, depicts the story of Lee Seung Min, a boy with zero presence who is offered a contract relationship by Oh Ji Na, the best girl-crush idol trainee in the school.
