Jiang He and Gu Zhilan, president of the Gu Group, enter into a contract marriage arranged by their elders. After marriage, the two maintain a clear boundary, strictly fixing their intimacy to every Saturday night and living as strangers under the same roof. An ambiguous message mistakenly sent during a birthday farce completely shatters this cold order. Jiang He never clings to the Gu family's power, single-handedly enduring business suppression, yet quietly protects her comprehensively in the mundane daily details; Gu Zhilan closes her heart due to childhood trauma, but gradually softens in this unrequited-demand gentleness, moving from restraint and detachment to proactively getting jealous and breaking the rules. Their cold contractual marriage ultimately brews into a healing romance of mutual pursuit through silent companionship.