Watch Online Free on Watchseries. A group of friends decide to go camping on Friday the 13th and engage in sex, drugs, and rock and roll. What could possibly go wrong? It's the 1980's and a masked killer begins a murder spree in order to appease a demonic force. One by one the campers are sacrificed, until one lone survivor strikes back ending the mayhem. The moral of the story? Some stories are best left forgotten.