Right after a confrontation with thugs over territory, Kang Chan-hee, the leader of Yongdupa, who is experiencing intense tooth pain, goes to a dental clinic that operates during the night. There, she encounters Dr. Shin Ha-jin and instantly falls head over heels. From that moment onward, she starts to pursue her in both emotional and material manners. Eventually, will Chan-hee's genuine feelings reach her? The two find themselves spending a night together...