Leonard is a shy, socially awkward 40-year-old man, who does his best to take care of his ailing mother, Lena. He dances with her, feeds her and even bathes her before helping her to bed at night. The old woman seems to suffer from dementia, but there is something sinister about her empty gaze and wild appearance. One evening, unexplainable things happen, and Leonard collapses in the corridor. When he wakes up, his mother is behaving very strangely. Johan, a naive guy from the neighbourhood watch shows up, but the poor man is not prepared for the horrors he stumbles upon.