The kids have no idea where they are going and imagine a doomed class trip full of ferocious animals, maniacal monsters, and scary aerial acrobatics. It's any kids nightmare-danger and homework everywhere! And then there's their teacher, mean Mrs. Green! Fortunately, the kids stop letting their imaginations run wild and soon realize they're in for a very fun trip to the zoo.

班上的小朋友不知道他們要去哪裡郊遊。他們想像即將到來的班遊，一路上會充滿兇猛的動物、發狂的怪獸、恐怖的空中雜耍。危險的事物和作業是所有小朋友的惡夢！還有脾氣暴躁的葛林老師！幸好小朋友們沒有一直瘋狂想像，很快就知道原來他們是要去好玩的動物園。