When Lee Jong Suk’s mother abandoned him he is left only with scars that go deeper than the point where they can be healed. His paternal aunt adopts him as her own son and sacrifices her own happiness to up bring the boy. Though she is still single, she refuses all the marriage proposals because she is asked to abandon Jong Suk each time.

One day she announces that she is getting married to a widowed man she had fallen in love with. There is a tall dark haired boy that comes along with that man and Jong Suk’s new life starts with his new family. His new father loves him and his mother treats him with all the love she has; but there is only one problem. That dark haired boy, his new step brother, Kim Woo Bin—he openly hates Jong Suk. He ignores every word Jong Suk utters, he glares at Jong Suk each time their eyes meet and he takes the every chance he gets to shoulder-smack Jong Suk. But is that how he really feels? Do those glares and shoulder-smacks show the real feelings he harbour toward Jong Suk or do they mask them?

What happens when Woo Bin discovers Jong Suk’s deepest and darkest secrets that have scared in his heart? How will he react to those uncanny secrets that are buried deep beneath Jong Suk’s chest?