A widow in 1870s Montana Territory searches for her son - the latest child to go missing from a rugged mining camp - but when he returns consumed by a ravenous evil, she must choose between her love for him and an impossible sacrifice.
After a disease kills 98% of children, the survivors develop powers and are declared a threat. 16-year-old Ruby, escapes the government facility and joins a group of rebel teenagers ready to fight the government forces out to get them.