Oh Sehun goes from being the CEO of a large hotel chain, charming but cold-hearted like the stereotypical heir, to Shixun, Lu Han's cousin from Busan who is essentially poor. Without any memories of his past, Shixun lives a rather carefree live with Lu Han, the flower boy cheat who always wants to earn more money. However, the truth will come to light at one point, and things turn out to be far more complicated than anyone had i