Dr. Isadora discovers her son Theo is actually her mafia husband Rafe's child with her sister Camilla, who switched babies at birth and sent Isadora's real daughter Mara to a Tijuana fighting ring. After rescuing scarred, starving Mara, Isadora reclaims her patents, joins a rival firm, and severs the mafia alliance. As Rafe, Camilla, and her complicit family lose everything, Isadora finally builds a safe home for her daughter.
