Lawyer Su Yan signed a "March Couple" agreement with Internet writer Cheng Yanzhou in order to get rid of her family-arranged marriage partner Gu Chengze. From being a "drama queen" partner who was wary of each other, the two gradually let go of their guard during late-night script discussions and mutual help in workplace crises - Su Yan's arrogance hides the desire for true love, while Cheng Yanzhou's amusement reveals the gloom of childhood abandonment. However, Gu Chengze, as the "Guardian of Affection", secretly planned to forge evidence of Cheng Yanzhou's "cheating" and expose the secret of Su Yan's childhood adoption, pushing the two into the abyss of collapse of trust. When Su Yan discovered that Gu Chengze was the real culprit that caused Cheng Yanzhou's parents' car accident that year, Cheng Yanzhou had been admitted to the ICU due to the recurrence of old injuries. A love battle to heal old scars with sincerity began in the hospital corridor in the rainstorm.
