It begins as an innocent prank, when Deena Martinson and her best friend Jade Smith make sexy phone calls to the boys from school. But Deena's half-brother Chuck catches them in the act and threatens to tell their parents, unless the girls let him in on the fun. Chuck begins making random calls, threatening anyone who answers. It's dangerous and exciting. They even enjoying the publicity and the uproar they've caused. Until Chuck calls a number on Fear Street.