Once called a nightmare, the former class 4a is now scattered across different schools. What a stroke of luck that a class reunion is coming up, where Franz, Aki, Pauline, and the others will finally see each other again. However, it only gets really exciting when Miss Braitwhistle, their enchanting former teacher, shows up and invites the kids to her place. Of course, she has a little surprise in store: popping candy that grants wishes. And suddenly, they all find themselves in the zoo in the middle of the night.