Emma Ava was the real heiress of the Ava family. However, she was swapped with another baby at birth by a maid. After that, she grew up under the maid's abuse and became an underground boxer. John Liam, the eldest son of the Liam family, found Emma and let her know her real identity and the arranged marriage engagement between them. His intention was to reveal the conspiracy behind his uncle, who was an adopted son of the Liam family and intended to rob all their assets. In grief and shock, Emma finally faced up to her real identity as a rich heiress and reclaimed everything that belonged to her. During their time together, John even deeply falled in love with this strong-willed heiress.
