Flora María Peralta (Fanny Navarro) is assigned to care for Isabel (Tita Merello) the wife of the rich architect Carlos Dumond (George Rigaud), whom she accuses of the careless driving behind the accident that condemned her to a wheelchair for life three years ago, and of having lovers and never kissed her again since the accident. Isabel suspects Flora of being one of her husband's lovers, and indeed one night, despite being wheelchair bound, she manages to ramp up to Flora's bedroom when she was with her husband. Isabel faints. Shortly after the incident, Flora drives the wheelchair into the lift's cage - and Isabel dies in the three story fall, as the cabin was not there, due to a mechanical malfunction as the brief inquest determines. Flora does not know that the accident was prepared by the cunning architect, who did not want to face a divorce that would strip him of all the couple's assets. Therefore, Flora is accused of murder by negligence, and sent to prison - where she ...