After the success of the first film "Die Informantin", which delighted over 5.5 million viewers, the story of the undercover law student Aylin is now being told. She actually doesn't want anything to do with the LKA. But she has no choice. In "Der Fall Lissabon" she has to spy on a star lawyer who launders money for terrorist cells. Should she refuse, the life of her sister and that of her niece is threatened. Crime scene inspector Aylin Tezel embodies a brave young woman who gets caught between the fronts and can only rely on her instinct.