The plot of this story revolves around three brothers- Juan, Oscar and Franco Reyes, who swear an oath of allegiance on the tomb of their recently departed sister, Libia, to avenge her death. Libia died under mysterious circumstances while she was involved in a passionate relationship with another man, the wealthy and influential Bernardo Elizondo, who has since also died, under mysterious circumstances. The brothers discover that, not only was Elizando married throughout his relationship with Libia, but he was also the father of three very beautiful, and very different, adult daughters. Believing Libia's death to be directly related to her relationship with Elizando, the brothers determine to infiltrate his life and wreak their vengeance on the lives of his survivors. There, however, they discover that things are not as simple as they thought they would be.