This film is about aliens who enter a family's house each night. They try to convince other people about it, but it doesn't go well., and they have to fight against them to protect themselves.
I wouldn't really call this a horror movie at all, It's more of a thriller. But it gets very scary. There are a few disturbing scenes (Black rashes on a child's chest, some blood, A woman smashing glass with her head.)
There's some bad language too, but mild. (Sh-t, P-ssy, B-tch etc.) There is a porn tape heard on a televison, But no sexual images or content, just audio.
While this is pretty scary and creepy I'd say anyone over 11 would be fine watching it. :D