As the heir to the Yooshin company, Yoo Taehyuk lives his best life. However, everything changes when he is told that the dragon, the protector god of the Yoo family, wants to leave them to be with his partner. When his sister was asked to take a risk for the family and announce herself as the dragon's mate, Taehyuk stepped up instead. He agrees to meet the dragon in the hope that he can convince it to stay. But will Taehyuk manage to creep into the good graces of the invulnerable dragon or get under its scales