In the late winter of the 26th year of the Republic of China, a heavy snowfall in the old streets of Nanjing led to an unexpected encounter between the poor orphan Su Wan and the powerful Shen Yanci. In order to save her sick mother, Su Wan was forced to sign a three-year contract and work as a servant in the luxurious but cold Shen Mansion.
When she first entered the mansion, she was cautious, but she was repeatedly challenged by Shen Yanci's fiancée Lin Weiwei. Shen Yanci's attitude alternated between hot and cold, and his occasional tenderness made Su Wan feel emotional. However, the identity gap and Lin Weiwei's hostility made this secret relationship full of thorns.
Su Wan was devastated by the frame-up incident in the woodshed. She put away her expectations and just wanted to survive three years in peace. However, the arrival of Shen Yanci's cousin revealed the secret behind Shen Yanci's indifference - there was a woman with similar facial features to Su Wan hidden in his heart, and Su Wan became a substitute.
As rumors of their engagement spread and their mother suddenly became seriously ill, conflicts broke out. In order to protect Su Wan, Shen Yanci did not hesitate to fall out with the Lin family, but it also pushed the two of them into a greater crisis. Is the fate of meeting for the first time in an old alley the beginning of redemption, or is it a trap set by fate? In the context of the turbulent Republic of China, can the two people with very different identities break through the entanglements in power and the shadows of the past and find a glimmer of hope?
The heroine's sister: Damn it's so unlucky