Arturo De La Riva has been happily married to Eugenia for 10 years, with whom he has a daughter, named Aranza, however, they do not imagine that Eugenia´s cousin Sonia, is obsessively in love with Arthur in secret, leading her to cause a terrible tragedy. Meanwhile, Isabel Lopez Cerdan spent two years believing she was married to Fernando Cordova, whom she loves above all everything.
Eugenia dies unexpectedly at the same that Isabel discovers that Fernando is a scammer. After such hard blows, fate unites Isabel and Arturo on a heavenly beach, giving birth to a relationship that must defeat several hardships such as the manipulation Sonia puts on Aranza to make her reject Isabel, and Fernando´s hunger for revenge.
