Stop-motion animation. A comet is hurtling towards Earth. Moomintroll and friends travel to a mountaintop observatory to investigate.
as Mumi-troll, Mummi-papa, Snusmumrik / Муми-тролль, Муми-папа, Снусмумрик, рассказчик
as Sniff, Mumi-mama / Снифф, Муми-мама
as (voice)
