豆豆好奇心强、淘气,在读小学一年级的时候被老师劝退了,为了找到一所可以理解性格的学校。于是她的妈妈带豆豆来到了巴学因,一所与众不同的学校。在这里,教室居然是真正的电车!校长小林先生更是一个非常好的人…… Peas curiosity is strong, naughty, was the first year of primary school teachers advised to quit, in order to find a school that can understand personality. So her mother came to the school with Peas, a distinctive school. Here, the classroom is actually a real tram! President Kobayashi is a very good person ... ...