两个小鬼头探望老祖母,为了不让小朋友调皮捣蛋,开始跟他们说起烟囱里可怕怪物的故事,小朋友如果不乖,就会…… The two siblings Ida and Skrubsak are visiting grandmother, a tight lady without the great understanding of small people. When drawn to mischief, she threatens with the Boogie man, who lives in the chimney and eats bad children.