The Contract Begins: A Substitute's Cage

* Pei Qingheng: Gentle and refined in appearance, with a pure, clean air and an artistic talent. He is resilient and deeply loyal, but at first, his love makes him humble and long-suffering. His family is ordinary, or has suffered a misfortune, and he needs money to pay for a loved one's medical treatment or repay a debt. This is key to his contract relationship with Chu Hanxiao.

* Chu Hanxiao: The person in power at the Chu Group. Cold, domineering, extremely possessive, and ruthless. Deep down, he carries an unresolved trauma connected to his cherished first love, Gu Yan. He is strikingly handsome and has a commanding presence. At first, he sees Pei Qingheng only as a substitute and a plaything.