Chloe Noble is devastated when she's told that her boyfriend, Scott, is cheating on her. She becomes determined to find out the truth. But as she snoops through his personal things, the world around her instantly goes black. Not knowing what has happened, a door suddenly opens in front of her and she's faced with people and places she's never seen before. Trapped far away from home and gradually discovering the secrets of Scott's life, she quickly realises that him cheating on her is the least of her worries. Then Scott goes missing and the issues around her rapidly grow in intensity. Chloe has no choice but to face her fears and help her new friends put society back on track, before the world as she knows it is changed forever.