In order to resist the business marriage arranged by her family, the heroine (Su Letong) hired an "extra" to pretend to be her boyfriend in desperation. Under a series of mistakes and family pressure, the two were forced to sign a one-year "hidden marriage" contract and start a life of frivolity under the same roof. From trying to undermine each other and embarrass each other, to unexpectedly forming a tacit understanding when dealing with family crises and workplace difficulties, the two gradually discover another side of each other that is unknown to everyone. The story uses a relaxed and humorous tone to show the sweet process of how a pair of happy enemies went from being "loathed of each other" to being "really sweet", and finally grew up together and healed each other's past scars.
