Laurita and Lorenzo have what everyone considers "the perfect marriage." He's handsome, refined, educated, rich and he adores his wife. She's beautiful, elegant, a true society lady: the ideal mate for a man like him. However, since not all that glitters is gold, there's something wrong with this couple. Laurita is bored with her marriage and this simple fact sparks off a series of events that no one will be able to control. It all begins with the appearance of Alex, a young and frivolous opportunist whose principal occupation is seducing rich women by using his job as a "personal trainer" to get close to them. When Laurita meets Alex, she feels an overwhelming physical attraction. As she continues to see him at the gym she attends, they become friends and, eventually, passionate lovers. Convinced that she is in love with Alex, Laurita makes the difficult decision to leave Lorenzo.