Complex sentence: The film is a crossover between the "Friday the 13th" and "A Nightmare on Elm Street" franchises and pits Jason Voorhees and Freddy Krueger against each other in the eleventh and eighth entries in their respective series.
Split into simpler sentences: The film is a crossover between the "Friday the 13th" and "A Nightmare on Elm Street" franchises. It pits Jason Voorhees and Freddy Krueger against each other in the eleventh and eighth entries in their respective series.