When Kai, the youngest son of the E&O enterprises, was on the verge of being disowned by his stepdad who froze his assets, including his money, penthouse and the limo, he has to find someone to save him. With the help of his best friend and a girl called Lee Yeon Seul, he must find his dad's best friend and get his father's will. He used Yeon Seul to get his money. Will Yeon Seul forgive him? Or will she revenge him for using her like a pet?