Rain: The Untold Story (2022)

S1E26 The Catastrophe

The Moomin family's springtime joy is shattered by a troubling letter from Fillyjonk, who forebodes an impending disaster. Concerned, Mom hurries to check on her. Just then, a fierce storm wreaks havoc, demolishing Fillyjonk's neglected home. In a show of kindness, Mom and Moomin extend an invitation to Fillyjonk, offering her shelter.