Alexander Bopp is the leader of the Super Secret Monster Patrol, a club whose members are sworn to protect the town from monsters. But there haven't been monsters to fight for months... Alexander misses his best friends — and fellow club members — Rip and Nikki. Then he starts finding weird old-timey objects, cake crumbs, and creepy monster cards all over town! Could the monsters be back? The Super Secret Monster Patrol will have to get back together to find out!