Children are often scared of a boogeyman. But there is no such thing as a boogeyman! Hilla, Kaapo and even six-year-old Mikki know that well. And then… Mom won a trip to Lapland and leaves, Dad hasn’t come back yet from a business trip, and the kids are left with a new babysitter—and this babysitter is the very real boogeyman!
A huge, furry one that scatters dust and sleeps in the closet in the hallway. Or doesn’t sleep, as Mikki’s talking nightgown insists? Who even is a boogeyman and where did she come from? And the most important thing: how can we help her get back home?