A gentle lady from a noble family, Aria, is forced to marry Kieran, a mafia don. With her tenderness, she tames him and his two young children.Yet she is blackmailed by political foes and coerced into betrayal. Dropping her facade, she devises a trap using herself as bait, standing side by side with Kieran to crush the conspiracy.In the end, the iron-fisted don bequeaths his entire empire and his life to her. What began as a contract marriage blooms into a legend of two rulers reigning side by side.