In the noisy and bustling city, Lin Yiyi, as the eldest lady of the Lin Group and a shining popular idol, came together with Park Chanyeol, the heir to the Park Group, through a family marriage. However, this marriage was a secret contract that was hidden from the outside world. The two maintain a perfect image in public, but they have different lives and dreams in private. As the time they spent together increased, they gradually discovered the unknown side of each other. From the initial use of each other to the later secret love, the relationship between the two quietly changed under the stars. When the truth of the contract gradually emerges, how will they face each other and this marriage full of secrets and challenges? A story about love and growth of an urban wealthy family is about to be staged movingly.