Book 1

Jack Sullivan is a thirteen-year-old boy who lives in a tree house after a monster apocalypse. His tree house has catapults, a moat, video games and lots of Oreos.
But Jack cannot fight all the monsters alone. There are zombies, flying monsters and other strange creatures. The most dangerous monster is Blarg, a very intelligent monster.
So Jack creates a team with his best friend Quint, a former bully called Dirk, his pet monster Rover and June, the girl he likes.
Together, they want to defeat Blarg and become heroes. But can Jack and his friends save the day?