Zhao Ning and Shen Linxun enter a contract marriage arranged by their elders' blind date. Both harbor past loves in their hearts and agree to a pact of non-expectation after marriage. Living day and night together, the contract gradually blossoms into true affection. As their former loves return one after another and past knots emerge, the two go through suspicion, tug-of-war, and trials, breaking through inner shackles, ultimately choosing each other and completing the transformation from a cooperative marriage to true love.