The True Heiress is a Boxing Queen

Anna Maxwell, the unbeaten champion of the underground fight scene, goes back to the wealthy Sterling family with one goal: raising $100 million to rescue the orphanage that once took her in. Her fists are formidable, but so is her mind, and she sets out to expose Sybil Sterling, a scheming impostor who has been posing as the family's true heiress. Anna's path leads straight into the path of her cold-hearted biological father and the ruthless business empire he has built.