In Hollywood it's all about who you know, and the only person two friends know is a serial killer.

Two down-and-out Hollywood screenwriters living together in a self-storage facility suspect that the man who rents space next to them is the infamous Costume Killer--a serial murderer who stalks the streets of Los Angeles decked out in ridiculous rented outfits. Using their neighbor's misdeeds for inspiration, the two friends desperately try to write a hit screenplay... at any cost.—rottentomatoes.com