Kim Yong-sun is an exiled princess, the last of her family.  Her father, the king, and her whole family, was murdered and the traitor now sits on the throne.  She vows to take the throne back but meeting Moon Byul-Yi in the process might put a damper on those plans.

People have always said that Mamamoo has never been a group of 4 members, but rather a group of 2 couples.  With their contract ending, everyone is watching as to what the two couples will do - but Mamamoo has always