AU Malec Based on the movie Prom Night Magnus Bane has a great senior year with his friends and his handsome boyfriend Alec and are planning to have the best prom of their life. Magnus thought that he prom night will be the greatest night of his life, but apparently what Alec and the others didn't know from his past is that three years ago, there was a psycho man who use to be a high school teacher had a crazy obsession over him and killed his mother right in front of him and was put into maximum security. But he had escape and has come back to claim Magnus as his, but Alec wouldn't let a psychopath get his boyfriend so he and the others vow to protect Magnus no matter what.