S01E31: The Big Explosion
One day, Muffel shows up in Moominvalley. He claims to be a famous inventor and is looking for his "fellow inventor" Snork to show him his latest invention, a super fuel. However, Snork suspects a trick.
Previous Episode 
Season 1
The Moomin Valley in Spring
S1E1 / 12 Apr 1990
The Magic Hat
S1E2 / 19 Apr 1990
The Discovery of a Wrecked Ship
S1E3 / 26 Apr 1990
The Moomins Discover the Island
S1E4 / 03 May 1990
The Secrets of the Hattifatteners
S1E5 / 10 May 1990
Tiny Guests
S1E6 / 17 May 1990
The Suitcase
S1E7 / 24 May 1990
The Hobgoblin's Magic
S1E8 / 31 May 1990
An Invisible Friend
S1E9 / 07 Jun 1990
The Invisible Child
S1E10 / 14 Jun 1990
The Wings
S1E11 / 21 Jun 1990
The Pirate
S1E12 / 28 Jun 1990
The Last Dragon on Earth
S1E13 / 05 Jul 1990
Our Neighbour is a Tough Teacher
S1E14 / 12 Jul 1990
Snorkmaiden's Lost Memory
S1E15 / 19 Jul 1990
A Close Encounter with Aliens
S1E16 / 26 Jul 1990
A Change of Air
S1E17 / 02 Aug 1990
The Wooden Crate
S1E18 / 09 Aug 1990
Buried in a Jungle
S1E19 / 16 Aug 1990
Moomin Saves the Tigers
S1E20 / 23 Aug 1990
Snufkin Leaves Moomin Valley
S1E21 / 30 Aug 1990
Moomin and Little My's Adventure
S1E22 / 06 Sep 1990
Visitors in Winter
S1E23 / 13 Sep 1990
Hurry Up Snufkin
S1E24 / 20 Sep 1990
The Lighthouse
S1E25 / 27 Sep 1990
The Day the Lighthouse Lit Up
S1E26 / 04 Oct 1990
Aunt Jane
S1E27 / 11 Oct 1990
The Floating Theatre
S1E28 / 25 Oct 1990
The Lost Children
S1E29 / 01 Nov 1990
Midsummer
S1E30 / 08 Nov 1990
The Big Explosion
S1E31 / 15 Nov 1990
The Golden Fish
S1E32 / 22 Nov 1990
The Spirit in the Lamp
S1E33 / 29 Nov 1990
The Kite
S1E34 / 06 Dec 1990
The Witch
S1E35 / 13 Dec 1990
Christmas is Coming
S1E36 / 20 Dec 1990
The Midwinter Bonfire
S1E37 / 27 Dec 1990
The Spell
S1E38 / 01 Jan 1991
Things that Go Bang in the Night
S1E39 / 01 Jan 1991
The Secret Fireworks
S1E40 / 10 Jan 1991
Crooks in Moomin Valley
S1E41 / 17 Jan 1991
The Solar Eclipse
S1E42 / 24 Jan 1991
The Prima Donna
S1E43 / 31 Jan 1991
The Birthday Present
S1E44 / 07 Feb 1991
Moomin Builds a House
S1E45 / 14 Feb 1991
Dame Elaine
S1E46 / 21 Feb 1991
The Hot Spring
S1E47 / 28 Feb 1991
The Bubbles
S1E48 / 07 Mar 1991
The Giant Pumpkin
S1E49 / 14 Mar 1991
The Imp
S1E50 / 21 Mar 1991
Snorkmaiden Goes Psychic
S1E51 / 28 Mar 1991
The Treasure Hunt
S1E52 / 04 Apr 1991
The Water Nymph
S1E53 / 04 Apr 1991
Mymble's Diamond
S1E54 / 18 Apr 1991
Moominpappa's Second Youth
S1E55 / 25 Apr 1991
The Secret Dish
S1E56 / 02 May 1991
Motherly Love
S1E57 / 09 May 1991
Artists in Moominvalley
S1E58 / 16 May 1991
Adventures of Moominpappa: Part 1
S1E59 / 23 May 1991
The Terrible Little My
S1E60 / 31 May 1991
Moomin's the Fortune-Teller
S1E61 / 06 Jun 1991
Witch-Walking
S1E62 / 13 Jun 1991
Adventures of Moominpappa: Part 2
S1E63 / 20 Jun 1991
Moomin and the Birds
S1E64 / 04 Jul 1991
The Fancy-Dress Ball
S1E65 / 11 Jul 1991
The Vampire
S1E66 / 18 Jul 1991
The Chair
S1E67 / 25 Jul 1991
Adventures of Moominpappa: Part 3
S1E68 / 01 Aug 1991
The Phoenix
S1E69 / 08 Aug 1991
Moomin's Big Fish
S1E70 / 15 Aug 1991
The Slug-a-Bed Mushrooms
S1E71 / 22 Aug 1991
Moomin and the Dolphin
S1E72 / 29 Aug 1991
The Cave
S1E73 / 05 Sep 1991
A Wonderful Present
S1E74 / 12 Sep 1991
The Fabulous Emerald
S1E75 / 19 Sep 1991
Painting a House
S1E76 / 26 Sep 1991
The Great Race
S1E77 / 03 Oct 1991
Going South
S1E78 / 03 Oct 1991
Season 2
The Ring on a Finger
S2E1 / 10 Oct 1991
The Girl with Birds
S2E2 / 17 Oct 1991
A Wind of Freedom
S2E3 / 24 Oct 1991
Mr Caramel
S2E4 / 31 Oct 1991
A Real Gold Mine
S2E5 / 07 Nov 1991
Sand Sculptures
S2E6 / 14 Nov 1991
The Beach
S2E7 / 21 Nov 1991
A Bothersome Nephew
S2E8 / 28 Nov 1991
The Time Travel Machine
S2E9 / 05 Dec 1991
The Circle of Secrets
S2E10 / 12 Dec 1991
The Dragon
S2E11 / 19 Dec 1991
The Desert
S2E12 / 01 Jan 1992
Queen Cleothystra
S2E13 / 01 Jan 1992
The Treasure Map
S2E14 / 09 Jan 1992
A Sniff at Everything
S2E15 / 16 Jan 1992
Funny Disguises
S2E16 / 23 Jan 1992
Moomin in Cowboy Country
S2E17 / 30 Jan 1992
Moominson Crusoe
S2E18 / 06 Feb 1992
Hidden Love of Pretty Mee
S2E19 / 13 Feb 1992
Tears of the Dragon
S2E20 / 20 Feb 1992
Chouca Lisa
S2E21 / 27 Feb 1992
The Night of the Red Moon
S2E22 / 05 Mar 1992
Return to Childhood
S2E23 / 12 Mar 1992
The Birthday Surprise
S2E24 / 19 Mar 1992
The Moomins and the Fake Yeti
S2E25 / 26 Mar 1992
The Starry Voyage
S2E26 / 26 Mar 1992
Minami Takayama
Moomintroll (voice)
Rei Sakuma
Little My (voice)
Ryusei Nakao
Sniff (voice)
Takehito Koyasu
Snufkin (voice)
Mika Kanai
Snorkmaiden (voice)
Akio Otsuka
Moominpappa (voice)
Ikuko Tani
Moominmamma (voice)
