Spy School: Operation Roaring Rhino

This is a sequel to Spy School: The Rescue Games. After saving his friends from the game maker, Ben went back to spy school, only to be recruited for another mission, along with Erica, Mike, Zoe and Catherine, this mission involves sneaking into a zoo and acting as junior rangers, and befriending the daughter of a rich and suspected-To-be-evil zookeeper who they think is plotting something, what will happen when the whole mission goes south?