Kindergarten teacher Yvonne Sterling is forced into marriage by her brother-obsessed mother, when billionaire CEO Vincent Sterling steps in to rescue her as he seeks a caregiver for his autistic son Jasper Sterling. The two enter into a flash marriage agreement. After marriage, Yvonne takes gentle care of Jasper and slowly opens the boy's heart, but she faces repeated slander from Cindy Sterling, deliberate framing from Dr. Bianca White, and constant pressure from her original family. Vincent, who initially only saw the marriage as a contract, is gradually moved by Yvonne's kindness and resilience, and steps forward many times to protect her. The two go through numerous misunderstandings and trials, their feelings gradually growing, turning from nominal spouses to genuine partners. In the end, Yvonne breaks free from the shackles of her original family and gains a happy, fulfilling family.
