A pair of sisters from the Su family with very different personalities - the cheerful and straightforward eldest daughter Su Qingyuan and the timid and gentle second daughter Su Wanning. On their wedding day, due to an accidental sedan chair change, they each married into a mansion that was not theirs.
The timid Su Wanning mistakenly married into the strict rules of Zhenbei Houfu, and married the rumored cold-hearted Prince Xiao Ce; while the cheerful Su Qingyuan accidentally married into a scholarly family and became the wife of the gentle and elegant Gu Yunzhou. Four people who had never met before marriage were forced to start a new life in a "misplaced" marriage: Su Wanning gradually melted Xiao Ce's coldness with her care and perseverance amidst the rules and difficulties of the Hou family; Su Qingyuan, with her frankness and wisdom, collided with Gu Yunzhou in the bookish atmosphere of the Gu family.
From laughing and laughing when they first got married, to fighting side by side when dealing with family disputes, to uncovering the truth that the "wrong marriage" was actually a secret operation by their elders, the two sisters stumbled in their respective marriages, but they also slowly understood the sincerity of the people around them. Xiao Ce's silent protection and Gu Yunzhou's gentleness and tolerance made this marriage that started out of an accident finally turn into a long-lasting deep love with the trivial support of daily necessities and the support through thick and thin.
This is a heart-warming story about "Marriage first, love later". There are accidental coincidences, laughter and tears during the running-in, and understanding and cherishment that transcend the misplacement. It turns out that the best fate may not be the initial choice, but in the companionship day after day, they slowly grow into each other's indispensable appearance.
Concept: the contingency of fate and the inevitability of emotion