A teenage girl named Lucy wants to go to a party at her friend Ava's house, but her overprotective father is concerned about her safety, especially since Ava's parents are away. Despite initial resistance, he allows her to go after meeting Ava. However, at the party, Lucy discovers that Ava and her father are involved in a sinister plan to kidnap her and sell her to wealthy buyers. As things unfold, Lucy realizes Ava's betrayal and fights to escape the dangerous situation.