Basically it's about a caveman looking guy who lives in a attic and creeps down for his glass and half of milk most evenings before suddenly killing everyone in the house. Now that I've spoiled the film you might want to consider something better made, which would include just about anything. Utterly awful, sterile, wooden acting, no character development, overused plot of the attic and a music soundtrack that never lets up. Apart from that it's a scream.
Review of Within
