If you’re casting a movie about geeks, make sure you cast some geeks. It’s a good rule to follow, and clearly one IndieVest Pictures took to heart when assembling players for their LARPcentric new feature film, Knights of Badassdom. If a movie about live-action role playing, magic and plenty of that substandard female armor–starring actors from Game of Thrones, Firefly and True Blood–isn’t geeky enough for you, then it’s probable that nothing is. (Also, for the three others of you who saw it, Zahn’s Star Trek-fanatic Marvin in Daddy Day Care was hilarious.)

From the movie’s YouTube channel:

In this comedic fantasy adventure, Joe (Ryan Kwanten) is a heavy metal rocker who’s just gone through a painful breakup with his girlfriend, Beth (Margarita Levieva). His concerned roommates (Steve Zahn, Peter Dinklage) kidnap him to their LARP (Live Action Role Playing) gathering, where he enters a realm of fantasy escapism in which pretend knights, elves, and barbarians clash with foam weaponry on a mock battlefield. When Joe’s “sorcerer” roommate (Zahn) inadvertently summons a deadly succubus that takes Beth’s seductive form, bloody reality crashes down upon their fantasy world. Once LARPers start to turn up dead, the make-believe wizards and warriors must join forces with other adventurers (Summer Glau, Danny Pudi) to become the real life heroes they have been pretending to be and conquer the unleashed evil.

IndieVest Pictures’ feature film KNIGHTS OF BADASSDOM will be in theaters Spring 2012. Follow the film on Facebook and Twitter.