The whole class is going on a field trip to the zoo! But too bad for classroom rivals Kinzie and Ben. Neither of them can go thanks to getting - and sharing - pink eye. To make it even worse, Ben's mom has gets called in to work and that means Ben has to come to Kinzie's house for the day. And there's no time to make a Kinvention to stop that. Kinzie and Ben decide if they can't go on the field trip, maybe they can create their own backyard zoo instead. What could possibly go wrong with that great idea?