Identity Unknown, Love Unfolding

Ling Hanchen and Xu Muran are married due to a family arrangement, but Ling Hanchen goes abroad for three years after their marriage. One day, an unexpected incident leads to them having a one-night stand, but Ling Hanchen fails to recognize Xu Muran as his wife. Xu Muran then hides her identity and becomes a caregiver for Zheng Wan'er, working to raise money for an orphanage. Zheng Wan'er tries to drive a wedge between them, but in the end, the couple clears up all misunderstandings and ends up together.