In this conclusion to the 'Brightest Stars' trilogy, as the world around Karina and Kael starts to crumble, Kael is consumed by the darkness of his PTSD, and Karina struggles to overcome her anxiety, which is at an all time high. Then someone from their past returns to invade their lives and wreak havoc on the fragile peace they've created. If they're going to have the future they dream of, they'll have to commit to fighting this battle together.