In the opening scene, Eden has a disturbing flashback of gory images from a dystopian setting. She receives mysterious text messages from an unknown sender "M" warning that "the dark age has begun." Eden experiences more frightening events, including seeing blood on her hands and a message written in her mirror. Her mother calls and tells her not to leave the house. Eden goes outside anyway and is stalked by a hooded figure holding a red balloon. In a flashback, Eden sees her mother huddled in a corner, blaming Eden for harming her and others. The four acts establish ominous and mysterious events occurring to Eden with suggestions of violence in her past.