In his dreams, Moomintroll is a golden-tailed social butterfly. The Moomin family is invited to the Duchess' cocktail party, where Moominpappa and the Muskrat cause a scene and Moominmamma eats too much cake. Snufkin was right after all.
Moomintroll is sound asleep. In his latest dream, Sniff introduces his own little toy dog Cedric. Many are curious about the dog, especially Gaffsie's daughter. Sniff relents and gives the dog to her. But nobody loves Cedric like Sniff.
Moomintroll is now dreaming of winter. In his dream, it's a competitive day at the Moominvalley. Mr. Brisk, a notoriously bad loser, has arranged a skiing competition and even the creature Edward the Booble join in on a snowball fight.
During his restless winter sleep, Moomintroll is dreaming of a jungle life. He and Snork Maiden are like Tarzan and Jane. Helpful Stinky is freeing animals from the zoo and the forest is truly alive. What's next, a picnic with the tigers?
Moomintroll continues to dream about a jungle. Crocodiles swarm the familiar bathing hut and eventually the children have to swim to get away from the angry snake. But the real danger is man, not animals. And the weather is changing.
Seeing the Groke outside his window, Moomintroll retreats back to his dream world. Moomintroll and Sniff visit a fortune teller in an amusement park, a ghost appears and the prize awaits them. Soon Moomintroll feels as light as a balloon.
Under the northern lights, Moomintroll dreams. He is sailing on the seas with friends. They find a crate filled with bad words and plan a prank on the humorless Hemulen's Aunt. But why a strict lady Hemulen has so many gold coins?
Moomintroll awakens to a ray of winter sunlight, but soon falls asleep again. In his dream, the postman delivers a mischievous Nibling for the Moomin family. Moominmamma has to wade through a thick snow to find a home for the little one.
Moomintroll is dreaming that he is hunting in the forest with his father, wearing safari helmets. Stinky warns them about the escaped vampire and the whole valley seems to be alerted, including Moominmamma. But do vampires like pancakes?
Moomintroll continues to dream about the vampire. Moominmamma tries to keep the secret, but it slips out when the vampire escapes from its hiding place. The fearsome vampire is just a gentle little bat. Moominpappa is still not convinced.
Spring is in the air, but sleeping Moomintroll has to conclude his vampire story first. The little bat has become friends with the Moomin family, but Fillyjonk's visit could complicate things. Is Moominmamma still locked up in the attic?
Moominmamma tells about her dream. The Moomin family moves to a ramshackle lighthouse on a desolate, rocky island. Moomintroll and his father try to catch some fish and the magical seahorses leave a golden horseshoe - for luck.
Moominmamma's dream about a simple life on a lighthouse continues. Everyone feels a bit gloomy, especially Moominmamma. Being homesick, she starts to draw and paint on the walls. Through painting, she's literally back in her garden at home.
The Moomins are awake again, but Moominmamma's story isn't over yet. On the lighthouse island, the storm is brewing again. The cruel sea tries to take the boat and the whole island seems to be fighting back, even the trees. They're alive.
In Moominpappa's sci-fi dream, the old radio is broadcasting warnings about the Martians. One UFO has crash-landed in Moominmamma's vegetable garden and its strange technology will turn the Moomins invisible.
Moominpappa's dream is getting stranger by the minute. First the Moomins are invisible and soon everybody are floating in the air. The flying police squad wants the flying saucer. Only the small Martian child can help them now.
Moominpappa's dream about the visitor from Mars comes to an end. A strange machine keeps causing unlikely events and Moominmamma shrinks. Then, a flying saucer is landing. Farewell, little Martian child. Farewell, Moominvalley.