The long-enduring rivalry started many years ago, when Arturo Montenegro and Eladio Gómez Luna fought over the beautiful Ana Laura Montesinos Casino.
Years later, Ana Laura is an unhappy woman stuck in an abusive marriage, her only consolation her son Federico, who is a total antithesis of his father.
After being widowed by his first wife, Arturo married the shallow Nina Guerra with whom he had three kids: Rogelio, Ana Karen y Paulina.
Arturo, who is always focused on his business doesn't realise that Pedro, his son from his first marriage is being treated cruelly by his stepmother and her children.
When Ana Karen falls madly in love with Federico Gómez-Luna, the son of her father's enemy, Pedro offers her his support.