In their attempt to exonerate an innocent man, a group of social justice warriors raid an abandoned campsite in search of a serial killer. But, one by one, they are eliminated until it's just one person left against the prolific killer.
The film tells the story of 15-year-old Robin, a virtuoso piano player, and her mother Claire, who lives for her and is her biggest fan. When Robin is the victim of a serious accident, their life will undergo a sudden change.