When Gu An Tong agreed to marry Si Zhenxuan, she believed it was a marriage of convenience — a union built to secure her family’s future and protect the Si family name. But on their wedding night, behind closed doors, something shifts. Beneath Si Zhenxuan’s calm exterior lies a man both tender and unreadable — one who hides a past the family would rather erase. As whispers of his true identity surface and the weight of family expectations bears down, An Tong finds herself torn between duty and desire, truth and loyalty. In a world where love is often a transaction, she must decide whether her heart can risk everything for a man who was never meant to be hers. Set against a backdrop of wealth, secrets, and forbidden affection, Between Duty and Desire is a story of two souls learning that even in a marriage built on lies, love can still find a way to bloom.