Choi Jinri, also known as Sulli, was just any other simple girl out there except for being the only daughter behind the biggest enterprise in Korea, CM Group of Companies, and the heiress to Choi Shipping Lines. She only has four people to consider as her best friends or sisters, Krystal, Amber, Luna, Victoria and the rest is history.

Kim Jongin, known to many as Kai, was your typical bad boy. Born with good looks, he can sweep women of different ages off their feet. He's known as the major Playboy amongst his group. He has 11 people who can understand him, the real Kim Jongin. Did I forget to tell you that he's rich? Well, he's the heir of JX Prime Holdings and Corporation.

They were leading different lives, Sulli with her quiet and reserved life while Kai with his extremely dangerous and one heck of an adventurous life, until one fateful day, they were bound by marriage, one that doesn't even have love.

Will they be able to live a happy married life? ..... I think not..