As the adopted daughter of the Shen family, Shen Xiruo was forced to marry Chongxi, the sick and frail eldest son that everyone avoided. She thought she would be left a widow, but found out that her husband was actually a descendant of the dragon clan who was pretending to be sick. What's even more shocking is that she is no ordinary orphan, but a lost princess of the Dragon Clan. A substitute marriage contract involved her in the dragon clan's thousand-year grudges and the pursuit of the four dragon balls. It also launched a destined love affair across races between her and the "sick young man" prince.