Fergus and Zeke and the great farm field trip

Fergus and Zeke love being the class pets in Miss Maxwell's class, and they do everything the students do. So when Miss Maxwell tells the class they're going on a field trip to a local farm to help with the farm animals, pick apples, and learn about where food comes from, Fergus and Zeke make a plan to sneak their way onto the trip. It's busy harvest time on the farm, and before they know it, Fergus and Zeke are separated from the class and running from one sticky situation to another, annoying plenty of hens, goats, and sheep along the way. Will they manage to make it back to Miss Maxwell's class before the buss leaves for home, or will they be stuck on the farm for good?