Madam Shim has four sons: Ki-baek, Yi-baek, Sam-baek, and Sa-baek. The eldest son, Ki-baek falls in love with Goo Mi-ho, the daughter of Madam Shim's enemy, Goo Gook. Third son Sam-beak becomes friends with Chae Soo-jung, a hotel management student at his mother's hotel, but things become complicated when he and older brother Yi-baek both fall for her. Soo-young and Yu-ri both have a crush on fourth son Sa-baek, but he doesn't return their feelings and constantly ignores them.
