Heo Youngji is an intelligent innocent-looking girl. Jackson Wang is the good-looking player. Lee Jieun is the spoiled rich girl. Mark Tuan is the handsome cold guy. Four people with four different aspects, personalities and reputations. When they happen to stumble upon each other path, they discover something about each other unexpectedly. Who they really are, and the life they actually live in. You should know better than to judge a book by its cover. They bicker, fight and hate, but in the end they learn a valuable lesson of life.