Three groups of people intertwine and are left stranded in the streets on Purge Night, trying to survive the chaos and violence that occurs.

In a typical teen film about love, monsters, and gadgets, Marty, an aspiring comic-book artist, secretly loves his gadget inventor best friend, Sally, and fantasizes of saving her from the big bad world.

Gentle and broken, a homeless man is coerced by two teens to fight other men on video for cash but soon finds comfort in an unlikely friend and the lost diary of a young girl.