Before the events of the film, Moomin's father had finished building Moominhouse. During one rainy evening, the Muskrat suddenly appears at the front door to stay because his riverbank home had been destroyed by Moominpappa's bridge, built earlier that day. The next day, the rain's turned everything black and according to Muskrat, it is soot from outer space.
Before the film begins, Moomin's father had finished building Moominhouse. One rainy evening, Muskrat unexpectedly appeared at the front door to stay because his riverbank home had been destroyed by Moominpappa's bridge built that day. The next morning, everything was pitch black according to Muskrat, who claimed it was soot from outer space.