Yindi lives in her own little bubble, literally. For as long as she could remember she has lived inside a massive dome completely secluded from the outside world. That is until she meets Thistle, a young recluse who shatters her isolation as they explore the world beyond her own. But what begins as an unlikely friendship soon unravels into something far more dangerous as their innocent meeting threatens to expose secrets and truths that neither of them are prepared for.