A nameless, near-omnipotent force of evil is finally overthrown by the "forces of light" (aka The Planetary Alliance) and imprisoned on an out of the way world ... which just happens to be Earth.
Playing in their suburban garden one night, two young siblings - borderline sociopath Mimi (Nita-Josee Hanna) and her put-upon brother Luke (Owen Myre) - unearth a glowing gemstone.
The next day they discover 'something' has dug its way out of their garden, and they track the creature to a nearby abandoned factory, where it's hiding out.
The creature (played by Matthew Ninaber, with Stevn Vlahos providing the voice) is the "nameless evil", but the kids soon realise that it must obey Mimi's every command, because she holds the gem.
It reveals that its enemies refer to it as the Arch-Duke of Nightmares, but the kids decide to call it Psycho Goreman ('PG' for short) instead.
While the youngsters are having fun with their new 'toy' (for instance, one of their friends gets turned into a brain creature and a cop into a soulless, half-melted zombie... you know, crazy kid stuff), the forces that imprisoned PG on Earth become aware of his escape from captivity.
The Planetary Alliance sends Pandora The Templar (Kristen MacCulloch) to recapture the monster while he is still in a weakened state.
As this is all unfolding Psycho Goreman lives up to his nickname and enters Luke's dreamscape, trying to convince him to steal the gem from Mimi, but Luke sticks by his sister.
Until, she playfully orders PG to kill him one day!
You see, Mimi has become a living example of the old adage about "power corrupting", and while she started off with a mean streak, having PG at her beck and call has just made her worse.
Will the arrival of Pandora on Earth resolve the situation?
Written and directed by Steven Kostanski (who also made the brilliantly Lovecraftian horror The Void), PG: Psycho Goreman is truly bonkers, a gonzo, blood-spattered spin on the look of Power Rangers, interwoven with Japanese body horror, retro special effects, layered world-building, and a wicked sense of humour.
Even under Mimi's control, the invulnerable and superstrong Psycho Goreman has access to a broad arsenal of "dark magics" (such as transformation magic, telekinesis, paralysis etc) that ultimately means he is able to dole out whatever punishment he feels a target deserves.
Of course, if you fight honourably, you may well merit a "warrior's death"... which involves PG cannibalising your corpse in a most shocking manner.
With its tongue buried firmly in its cheek, PG: Psycho Goreman is most definitely not a film to be taken seriously, instead it feels as though Kostanki has thrown everything he loved from his childhood into a blender and splurged the results out onto the page.
Very much a comic book supervillain, there are shades of Thanos (and Darkseid) in Goreman's backstory, which makes his dominance by a young girl all the more humorous and rewarding.
He even has his own Paladins of Obsidian, a collective of unique villainous creatures, that he believes will come and save him.
The power dynamics of the PG universe are highly reminiscent of that employed by Michael Moorcock, with Psycho Goreman as the ultimate representation of chaos and Pandora as the definitive bastion of law.
Although the terms "good" and "evil" are bandied about, as is said at one point, the central battle is truly "evil versus an even worse evil".
Another geeky reference I grokked was the name of PG's homeworld, Gigax. Surely (even with the variant spelling) this is a reference to Gary?
And the anarchic and incomprehensible homemade game of 'Crazy Ball' that Mimi and Luke play all the time - and was always going to be a key element in the narrative - strongly reminded me of 'Calvinball' from Calvin and Hobbes.
Coming in at just over an hour-and-half, PG: Psycho Goreman is like a well-made Troma Entertainment movie, a Full Moon Features film with a decent budget, or an unfettered student flick with a top-notch script.
Not so much subverting expectations as leaning into them, PG: Psycho Goreman is simultaneously reminiscent of so much trash cinema we've grown up loving, and yet wonderfully unique in its commitment to a solid story in a well-defined sci-fi universe.
- PG: Psycho Goreman is currently available in the UK via the Shudder streaming service.
If you're looking for an idea of how to use Psycho Goreman in a gaming situation, check out Justin Isaac's write-up over at Halls of The Nephilim.