About the title
13-year-old Becky still hasn't come to terms with her mother's death a year on. The girl is angry at the whole world, especially at her father, who has invited his girlfriend and her son to Becky's beloved lake house and announced that he's going to marry her. Becky runs off into the woods, but doesn't even get to have a proper tantrum, because a gang of Nazis who have escaped from prison breaks into the house and takes everyone else hostage. They desperately need a certain key that they once hid in the basement, but Becky doesn't believe they'll leave once they get what they want, so she decides to fight back against the criminals.