Most people are apprehensive when Monday comes around, but for Han Jin, a senior associate at SH Corporation, it’s for a slightly different reason. Something takes over him every Monday, and he calls it his “Monday self.” From confessing his feelings to buying luxury items, Han’s Monday self helps him gain confidence, and soon enough, he makes a name for himself in the workplace. As problems arise, Han seeks help from his Monday self and colleagues, but he eventually realizes that in order to succeed, he has to start trusting in himself.