Inspector Soler is left blind after attempting to prevent a murder. Having lost hope of ever recovering his sight and working as a policeman again, he dusts off his lawyer's degree and ventures into what for him is the particularly tough world of law. He decides to face the challenge alone. But there is somebody who does not want him to: Susi, a teenager from the city's poorer suburbs, will cross his path as many times as needed until Mario accepts her friendship and help. Although constantly arguing, they end up making a wonderful, loyal and extremely effective couple.