Jaehyun is a 37 years old billionaire and the most feared mafia boss known as a cold blooded and heartless man strict on everyone except his daughter, it isn’t his real daughter he found her on the street but he loves her a lot. You’re Taeyong a 20 years pretty boy that babysits Jaehyun’s daughter, she loves you so much. And it looks like not only the daughter, Jaehyun’s a total obsessed of you and have been stalking you.little did you know it’s you heartless cold boss