Park Dong Hoon is an engineer at an architectural firm. He has it tough: a struggling marriage and his two brothers have hit walls in their lives. Quiet and stoic, Dong Hoon cares deeply for his family, but his cautious approach toward life means nothing ever changes for him. But that's all about to change when he meets her: Lee Ji Han. Ji Han also has it rough as a temp with a mountain of debt. She takes on any job she can get her hands on, but her next gig will be the most difficult one yet: learning about Park Dong Hoon. What starts off as a job turns into a real connection with an emotionally damaged man. As their relationship deepens, they both realize they can help one another with their emotional wounds.