One year after the events of Halloween 4: The Return of Michael Myers (1988), the Shape returns to Haddonfield once again in an attempt to kill his now-mute niece.
Ostracised villain John Kreese attempts to gain revenge on Daniel and Miyagi, with the help of a Vietnam War comrade, the wealthy owner of a toxic waste disposal business.
The almost-human son of "Brundlefly" searches for a cure to his mutated genes while being monitored by a nefarious corporation that wishes to continue his father's experiments.