Park Shin Hye is a sole heiress of most successful organisation in South Korea, TJ. She was trained to be the future president of TJ Organisation at a very young age and claimed the position soon she graduated her university degree. While her friends are enjoying their life to the fullest, she is expected to be in a meeting room, entertaining the clients and investors and even learn about the company. Shin Hye who once a cheerful lady and now has turned into such cold person when her parents announced her engagement with a most sought bachelor in South Korea.

Jung Yong Hwa is a humble guy all the way from Busan and now settle down himself in Seoul. Working as a teacher in daylights, Yong Hwa enjoys his nightlife more as a singer at the famous club in Gangnam. Yong Hwa never taken his relationship seriously until his first encounter with the heiress of TJ. Since then, his view of marriage has completely change and even wanting to make her part of his life.

Ok Taecyeon, the ever famous playboy and bachelor is now engaged to the heiress of TJ Organisation. Though, he is now engage to TJ heiress yet his habits never change. Going out with his other bachelor friends, spending night or two with other women does not affect him anything. He even care less of his own fiancé as Shin Hye prefers them to go with their own way.

​