The Happy Days of the Moomins (1985)

Based on episodes of the series "Moomin Stories", the Moomins reminisce about the fondest moments of their lives. Moominpappa reminisces about his childhood; Moomintroll reminisces about how he, Sniff, and Snufkin set out to find out if Earth was truly threatened by a comet; and Moominmamma reminisces about the incredible visit of aliens from outer space.