Framed for manipulating results and ousted from her position, the protagonist ends up working as the secretary to Kang Moon-jung, an executive at the Daeyoung Group. Facing threats to her own position, Kang Moon-jung sets her sights on the protagonist and, in a bold move, proposes a contract marriage to Yoon Tae-sik, who has loyally stayed by her side for three years. The price? A staggering 10 billion won. Enticed by the enormous sum, the protagonist agrees to the contract marriage, setting the stage for a high-stakes office drama filled with power struggles, unexpected twists, and a love that blooms where no one anticipated.