Min-chul misses his mother who left 5 years ago. His father Jung-soo brings Hyun-ah, a new mother who looks just like his mother. He recalls his mother as he watches Hyun-ah endure the violence his father shows, but he starts to see her as a woman.
A mysterious woman named Jung-min moves in above Sung-chul and he can't sleep every night due to the noise. She brings home a different man every night and she thinks Sung-chul is pathetic. One day, Sung-chul is having sex with his girlfrieng So-hee when he hears his new neighbor having sex upstairs. Furious, Sung-chul goes up to complain, but Jung-min is with another man and she yells at Sung-chul...
