A Brooklyn party enthusiast eagerly anticipates a massive bash, but his excitement quickly turns to horror when he becomes the target of a mysterious assailant. Fast forward a year, and he's ready to dive back into the social scene. However, his plans take a dark twist as a masked figure sporting a unicorn disguise begins to eliminate his friends in gruesome fashion. With his social life on the line, he must confront the terror lurking in the shadows before it claims him next.