The Friday the 13th franchise is a horror series that includes twelve slasher films, a television series, novels, comic books, video games, and tie-in merchandise. The franchise mainly focuses on the fictional character Jason Voorhees, who was thought to have drowned as a boy at Camp Crystal Lake due to the negligence of the camp staff. Decades later, the lake is rumored to be "cursed" and is the setting for a series of mass murders).

The first film in the franchise, Friday the 13th (1980), follows a group of teenage camp counselors who are murdered one by one by an unknown killer while they are attempting to re-open an abandoned summer camp with a tragic past). The film is shot in one location and features unknown young actors and actresses. It was a successful low-budget movie that was copied many times in other films.

The subsequent films in the franchise follow a similar formula, with Jason Voorhees as the main antagonist. The films feature a high body count, creative kills, and gratuitous nudity). The franchise has grossed more than $216 million at the domestic box office.

In summary, the Friday the 13th movie franchise is a horror series that follows the story of Jason Voorhees, a fictional character who is responsible for a series of mass murders at Camp Crystal Lake. The first film in the franchise, Friday the 13th (1980), follows a group of teenage camp counselors who are murdered one by one by an unknown killer while they are attempting to re-open an abandoned summer camp with a tragic past.