An American third-generation chaebol, with an attractive appearance and always surrounded by people, Leon, a charming man, has been living a debaucherous life in search of new stimulation. Unable to bear it any longer, he came to an unfamiliar land of Korea and was tied down by the company, living a boring daily life. Then, he meets Woo-joo, a new bodyguard who is supposed to watch over him. The sculpted face is just his style, and his unusual atmosphere piques his curiosity, which leads him to play mischievous pranks. However, Woo-joo is not afraid of his owner, Leon, but rather does not follow his orders well and even shows a ferocious attitude…!