Sherry Gu, the cherished daughter of the Gu family, has spent her whole life being kind. She dotes on the three adopted brothers her father raised at her side, treating them as family when no one else would. And her heart belongs to Ethan Shen, the boy she believes once saved her life. But her kindness is repaid with a blade hidden behind smiles. All three brothers have secretly fallen for Chloe Kang, the scheming daughter of the family's chauffeur. To win Chloe Kang's favor, they twist every truth, fuel every rumor, and stand by as she slanders and bullies Sherry again and again. Sherry suffers in silence, still believing the boys she loved would never truly hurt her.
The illusion shatters on her own birthday. Surrounded by guests and well-wishers, Sherry is publicly cornered — her three brothers, the men she shielded since childhood, take Chloe Kang's side and humiliate her before everyone. In one night, the girl who loved them dies. Sherry wakes up. She no longer cries, no longer begs, no longer loves. To take back her life — and to prove them all wrong — she agrees to a strategic marriage to Arthur, the crown prince of the capital, the man the entire city dismisses as a useless cripple. Her three former brothers sneer at the news: "She's marrying a dead weight? A perfect match for a fallen heiress." But they don't know the truth. The "useless" prince they mock hides a power that dwarfs the entire capital — and the bride they threw away has just become the most protected woman in the kingdom. When the masks fall and the revenge begins, only one question remains: who is truly the fool?