Keep the secret. Use your power for good. Keep out of trouble. Stick together. Or things will fall apart. They thought they’d already faced their toughest fight. But there’s no relaxing for the reunited Zeroes. It’s the holiday season, but the celebration at the Zeroes' underground nightclub is blown apart when two strangers with new powers take to the dance floor. The Zeroes pursue them, only to discover that they’re fleeing an even more sinister power-wielder, Swarm. The Zeroes must learn all they can about this dangerous new player if they are to stay safe. Meanwhile each of the Zeroes also has their own issues to deal with. Bellwether’s confidence is challenged, and Mob questions the nature of her power. Crash’s conscience gets a workout, and Anon and Scam face harsh truths about belonging. And it’s up to Flicker to pick up the reins and lead the Zeroes into a terrifying showdown. A terrific sequel with a cracking pace that raises the stakes in this brilliant and unique superheroes series.