A year ago, a serial murder case killed Martin (Laurence Rupp), Clemens (Michael Steinocher) and Erics (Nadja Vogel), graduates of Ebensee University. With the body of the serial killer Mrs. Haas accidentally discovered by a fisherman, this dark and terrifying case seems to have come to an end. Nina (Sabrina Reiter), who survived by chance, now works in a record store and is ready to start a new life. One night, Nina received a call for help from Mona (Julia Rosa Stöckl), and ominous thoughts began to emerge in her mind. Worried about the safety of her friends, Nina decided to go to Lake Eben where Mona was to find out. However, her premonition was soon verified. Mona had been involved in another horrific case, and Nina, who accidentally intervened, was getting deeper and deeper into this death trap...