Muumindani no Suisei

Moomin, Sniff, and Mee travel to the Observatory on the Lonely Mountains to verify the Muskrat's warning that a comet is heading towards Moominvalley, threatening to destroy it. Along the way, they encounter Snufkin, the Hemulen, and the Snorks, leading to a series of experiences that test their courage and wit. The group's journey is filled with various adventures as they navigate the challenges of the comet's impending arrival.