Killer Shrimps (2004)

Poolside at a ranch-style house in the canyons of Los Angeles, two filmmakers and their crew are filming a documentary about a young director. An interesting exploration into the ambitions and expectations of a rising star. Going back and forth in between different realities and possible futures, the arrival of a peculiar food delivery will open their experience to an alternative world populated with hallucinations. This sets the stage for the mother of all gorefests, as the two directors and their crew end up as characters in the eternal battle against evil creatures.