When Mario attacks Natalia again she is transferred to a hospital in Madrid with serious injuries. There she meets Doctor Engel, a handsome and attractive German, with a Spanish mother, who is willing to help her. When the doctor discovers that it is a case of domestic abuse and that the life of the girl is in serious danger, he convinces her to leave her aggressor. When Mario finds out, the death threats begin. Natalia and Engel discover that there is something more between the two of them than a simple doctor-patient relationship and that their past is not as different as it seemed at first. Mario will try by all means to end the life of his ex-girlfriend, whatever the price that he must pay for it. Despite the love that Natalia and Engel end up feeling for each other, there is something that prevents them from being together...