The movie 'Friday the 13th' follows a group of counselors who arrive at Camp Crystal Lake, where they are warned by Crazy Ralph that they are all doomed. As they begin training, they learn about the legend of Jason Voorhees and soon find out how real it is. As they explore the area, they are killed off one by one by Jason, who is seeking revenge for the death of his mother. The movie is a classic horror film that has become a cult favorite among fans of the genre.