Kim Serin was forced to marry Yang Jungwon even though she is only a year younger than him since he doesn't seem to like her at all following the untimely death of her adored older sister, which put her in a difficult position "This marriage is simply for business so don't think I like any of it" Jungwon told her

Jungwon is really cold towards Serin and has affairs.. until months pass by and he actually grows to like her... he comes home drunk one day