Determined to finish off the infamous killer Jason Voorhees once and for all, Tommy Jarvis and a friend exhume Jason’s corpse in order to cremate him. Things go awry when Jason is instead resurrected, sparking a new chain of ruthlessly brutal murders. Now it’s up to Tommy to stop the dark, devious and demented deaths that he unwittingly brought about.
Wifes and children of the Mormon Orville Beecham become victims of a massacre in his own house. The police believes the crime had a religious motive. Orville doesn't give any comment on the case, is taken into protective custody. Journalist Smith persuades him to help him in the investigation - and finds out about economic motives for the murder.
Teen lovers Bobby and Terry band together with other roller skaters to try and prevent a powerful mobster taking over the land their favourite skating rink sits on, and compete in the Boogie Contest.
A friend of Joanna has been killed by a serial killers who leaves the bodies in the woods. A strange guy who says is a private detective: Joanna begins to fear he might be the killer.
On July 2, a giant alien mothership enters orbit around Earth and deploys several dozen saucer-shaped 'destroyer' spacecraft that quickly lay waste to major cities around the planet. On July 3, the United States conducts a coordinated counterattack that fails. On July 4, a plan is devised to gain access to the interior of the alien mothership in space, in order to plant a nuclear missile.