Mark is a son of a famous CEO. One day, he is forced to get maried to a guy?! But that guy's family is not famous and he is poor. His name is Park Jinyoung. he is born in a poor family. His father died, leaving him and his mother alone. His mother works as a nurse in a hospital. However she does not get paid that good. Jinyoung is a high schooler and goes to haneul high, where all the rich kids attend. Jinyoung and Mark. They hate each other to death. Why? Jinyoung is poor but he is good at studying. he is at the top. Mark, he is also smart but is in a rank below Jinyoung. jinyoung is first and mark is second. Mark despises jinyoung because of this. Jinyoung is also teacher's pet. Everyone likes him even though he is poor. Mark thinks that everyone is weird for liking a poor guy. When everyone hears the news that jinyoung is getting married to mark, he starts getting bullied at school?!The worst thingabout this arranged marriage is that mark already has a girlfriend. What will happen to Jinyoung and what will happen to mark?