Seventeen-year-old April Parker wakes up in an underground facility, a shock bracelet on her wrist and a five-day countdown on the clock. Dozens of other teens share her inexplicable fate, but their unseen captors never intervene no matter how brutal conditions become. When the ruthless - and unnervingly magnetic - Marcus seizes control, April's trauma-forged instinct is to lay low. But protecting her friends drives her to bargain with the boy she should fear most - a boy whose reality fractures with every tick. Then the countdown ends, and the real terror begins. Powers ignite. Alliances shatter. And predators are born. And with a saboteur among them determined to keep the doors closed forever, escaping what comes next may be the only way to survive it.

‘I feel sick, not just from the pain but from the unknown, what’s happened to me? Where am I? Wait, better yet, who am I? My name. It’s something I’ve known my whole life… it defines me. So why can’t I remember it? I feel like it’s on the tip of my tongue, I try to move my lips to form it but all I discover is that there’s blood there too. There’s blood everywhere, but how and why is it here?’ When the one of the boys, quite literally, stumbles across a girl abandoned in an alleyway it will be up to all five of them to come together and help to put her back together again. A story of love, friendship and survival, it follows the boys as they go through their everyday lives thinking that they’re helping her to survive but in the end, will she be the one to save them?