This is the story of a woman who travels to the islands on the delta of the Parana River to fight for her inheritance. Isabel Sarli is a beautiful bikini-clad babe who travels to the island of the Tigre Delta to investigate her brother's death in this routine crime drama. The highlights of the film are the pretty women in various stages of undress and revealing bikinis. A thin plot concerns the plight of planters who are taken advantage of by unscrupulous wholesalers.