You're My Boyfriend, You're the First-timer: Tommy, who has been unemployed and has been employed after a long time, goes on a date with his girlfriend before he goes to work for the first time, and also bumps into the mill together. Tommy comes home with a lot of disgusting jokes about his girlfriend and wakes up with a man he's never seen before... He ran to Ji-hyeon from dawn, but Ji-hyeon tells him to leave before reporting. How will Tommy deal with this absurd situation...