They're Not Leaving Till They Get Dessert
The survivors are saved by the mysterious prophet Shot Bus Gus, who seemingly has the ability to control the beasts. He leads them into the sewers as they travel to the big city. Along the way they get help from karate expert Jean-Claude Seagal and learn that the beasts originate from a place called The Hive. Armed with this knowledge, they decide to fight back and destroy the beasts.