Complex sentence: The film is about young gay men having fun before and during the West Hollywood Halloween Carnaval, which, among other things, involves dressing up, playing with fake weapons and fake blood, and constraining one another playfully with handcuffs.
Split into simpler sentences: The film is about young gay men having fun before and during the West Hollywood Halloween Carnaval. Among other things, they dress up, play with fake weapons and fake blood, and constrain one another playfully with handcuffs.