The real daughter of the Houston family Carly Houston was swapped by a maid of the Houston Mansion since she was a little girl. She was raised by the maid under abuse and grew up to be a boxer fighting in illegal matches. In order to expose the conspiracy of the adopted son of the Tucker family to seize the property, Tristan Tucker, the eldest son of the Houston family, used the engagement with the Houston family to find Carly and told her about her true identity. In shock and grief, Carly decided to reclaim her identity as the true heiress and take back everything that belonged to her. During their time together, Tristan also fell deeply in love with this strong-willed girl.