S08E20: Islands: The Invitation (1)
A mysterious craft invades Ooo and Finn believes it may hold the secrets to his past.
Previous Episode 
Season 1
Slumber Party Panic
S1E1 / 05 Apr 2010
Trouble in Lumpy Space
S1E2 / 05 Apr 2010
Prisoners of Love
S1E3 / 12 Apr 2010
Tree Trunks
S1E4 / 12 Apr 2010
The Enchiridion!
S1E5 / 19 Apr 2010
The Jiggler
S1E6 / 19 Apr 2010
Ricardio the Heart Guy
S1E7 / 26 Apr 2010
Business Time
S1E8 / 26 Apr 2010
My Two Favorite People
S1E9 / 03 May 2010
Memories of Boom Boom Mountain
S1E10 / 03 May 2010
Wizard
S1E11 / 10 May 2010
Evicted!
S1E12 / 17 May 2010
City of Thieves
S1E13 / 24 May 2010
The Witch's Garden
S1E14 / 07 Jun 2010
What Is Life?
S1E15 / 14 Jun 2010
Ocean of Fear
S1E16 / 21 Jun 2010
When Wedding Bells Thaw
S1E17 / 28 Jun 2010
Dungeon
S1E18 / 12 Jul 2010
The Duke
S1E19 / 19 Jul 2010
Freak City
S1E20 / 26 Jul 2010
Donny
S1E21 / 09 Aug 2010
Henchman
S1E22 / 23 Aug 2010
Rainy Day Daydream
S1E23 / 06 Sep 2010
What Have You Done?
S1E24 / 13 Sep 2010
His Hero
S1E25 / 20 Sep 2010
Gut Grinder
S1E26 / 27 Sep 2010
Season 2
It Came from the Nightosphere
S2E1 / 11 Oct 2010
The Eyes
S2E2 / 18 Oct 2010
Loyalty to the King
S2E3 / 25 Oct 2010
Blood Under the Skin
S2E4 / 01 Nov 2010
Storytelling
S2E5 / 08 Nov 2010
Slow Love
S2E6 / 15 Nov 2010
Power Animal
S2E7 / 22 Nov 2010
Crystals Have Power
S2E8 / 29 Nov 2010
The Other Tarts
S2E9 / 03 Jan 2011
To Cut a Woman's Hair
S2E10 / 10 Jan 2011
The Chamber of Frozen Blades
S2E11 / 17 Jan 2011
Her Parents
S2E12 / 24 Jan 2011
The Pods
S2E13 / 31 Jan 2011
The Silent King
S2E14 / 07 Feb 2011
The Real You
S2E15 / 14 Feb 2011
Guardians of Sunshine
S2E16 / 21 Feb 2011
Death in Bloom
S2E17 / 28 Feb 2011
Susan Strong
S2E18 / 07 Mar 2011
Mystery Train
S2E19 / 14 Mar 2011
Go with Me
S2E20 / 28 Mar 2011
Belly of the Beast
S2E21 / 04 Apr 2011
The Limit
S2E22 / 11 Apr 2011
Video Makers
S2E23 / 18 Apr 2011
Mortal Folly
S2E24 / 02 May 2011
Mortal Recoil
S2E25 / 02 May 2011
Heat Signature
S2E26 / 09 May 2011
Season 3
Conquest of Cuteness
S3E1 / 11 Jul 2011
Morituri te Salutamus
S3E2 / 18 Jul 2011
Memory of a Memory
S3E3 / 25 Jul 2011
Hitman
S3E4 / 01 Aug 2011
Too Young
S3E5 / 08 Aug 2011
The Monster
S3E6 / 15 Aug 2011
Still
S3E7 / 22 Aug 2011
Wizard Battle
S3E8 / 29 Aug 2011
Fionna and Cake
S3E9 / 05 Sep 2011
What Was Missing
S3E10 / 26 Sep 2011
Apple Thief
S3E11 / 03 Oct 2011
The Creeps
S3E12 / 17 Oct 2011
From Bad to Worse
S3E13 / 24 Oct 2011
Beautopia
S3E14 / 07 Nov 2011
No One Can Hear You
S3E15 / 14 Nov 2011
Jake vs. Me-Mow
S3E16 / 21 Nov 2011
Thank You
S3E17 / 23 Nov 2011
The New Frontier
S3E18 / 28 Nov 2011
Holly Jolly Secrets (1)
S3E19 / 05 Dec 2011
Holly Jolly Secrets (2)
S3E20 / 05 Dec 2011
Marceline's Closet
S3E21 / 12 Dec 2011
Paper Pete
S3E22 / 16 Jan 2012
Another Way
S3E23 / 23 Jan 2012
Ghost Princess
S3E24 / 30 Jan 2012
Dad's Dungeon
S3E25 / 06 Feb 2012
Incendium
S3E26 / 13 Feb 2012
Season 4
Hot to the Touch
S4E1 / 02 Apr 2012
Five Short Graybles
S4E2 / 09 Apr 2012
Web Weirdos
S4E3 / 16 Apr 2012
Dream of Love
S4E4 / 23 Apr 2012
Return to the Nightosphere
S4E5 / 30 Apr 2012
Daddy's Little Monster
S4E6 / 30 Apr 2012
In Your Footsteps
S4E7 / 07 May 2012
Hug Wolf
S4E8 / 14 May 2012
Princess Monster Wife
S4E9 / 28 May 2012
Goliad
S4E10 / 04 Jun 2012
Beyond This Earthly Realm
S4E11 / 11 Jun 2012
Gotcha!
S4E12 / 18 Jun 2012
Princess Cookie
S4E13 / 25 Jun 2012
Card Wars
S4E14 / 16 Jul 2012
Sons of Mars
S4E15 / 23 Jul 2012
Burning Low
S4E16 / 30 Jul 2012
BMO Noire
S4E17 / 06 Aug 2012
King Worm
S4E18 / 13 Aug 2012
Lady & Peebles
S4E19 / 20 Aug 2012
You Made Me!
S4E20 / 27 Aug 2012
Who Would Win?
S4E21 / 03 Sep 2012
Ignition Point
S4E22 / 17 Sep 2012
The Hard Easy
S4E23 / 01 Oct 2012
Reign of Gunters
S4E24 / 08 Oct 2012
I Remember You
S4E25 / 15 Oct 2012
The Lich
S4E26 / 22 Oct 2012
Season 5
Finn the Human
S5E1 / 12 Nov 2012
Jake the Dog
S5E2 / 12 Nov 2012
Five More Short Graybles
S5E3 / 19 Nov 2012
Up a Tree
S5E4 / 26 Nov 2012
All the Little People
S5E5 / 03 Dec 2012
Jake the Dad
S5E6 / 07 Jan 2013
Davey
S5E7 / 14 Jan 2013
Mystery Dungeon
S5E8 / 21 Jan 2013
All Your Fault
S5E9 / 28 Jan 2013
Little Dude
S5E10 / 04 Feb 2013
Bad Little Boy
S5E11 / 18 Feb 2013
Vault of Bones
S5E12 / 25 Feb 2013
The Great Bird Man
S5E13 / 04 Mar 2013
Simon & Marcy
S5E14 / 25 Mar 2013
A Glitch Is a Glitch
S5E15 / 01 Apr 2013
Puhoy
S5E16 / 08 Apr 2013
BMO Lost
S5E17 / 15 Apr 2013
Princess Potluck
S5E18 / 22 Apr 2013
James Baxter the Horse
S5E19 / 06 May 2013
Shh!
S5E20 / 13 May 2013
The Suitor
S5E21 / 20 May 2013
The Party's Over, Isla de Señorita
S5E22 / 27 May 2013
One Last Job
S5E23 / 10 Jun 2013
Another Five More Short Graybles
S5E24 / 17 Jun 2013
Candy Streets
S5E25 / 24 Jun 2013
Wizards Only, Fools
S5E26 / 01 Jul 2013
Jake Suit
S5E27 / 15 Jul 2013
Be More
S5E28 / 22 Jul 2013
Sky Witch
S5E29 / 29 Jul 2013
Frost & Fire
S5E30 / 05 Aug 2013
Too Old
S5E31 / 12 Aug 2013
Earth & Water
S5E32 / 02 Sep 2013
Time Sandwich
S5E33 / 09 Sep 2013
The Vault
S5E34 / 16 Sep 2013
Love Games
S5E35 / 23 Sep 2013
Dungeon Train
S5E36 / 30 Sep 2013
Box Prince
S5E37 / 07 Oct 2013
Red Starved
S5E38 / 14 Oct 2013
We Fixed a Truck
S5E39 / 21 Oct 2013
Play Date
S5E40 / 04 Nov 2013
The Pit
S5E41 / 18 Nov 2013
James
S5E42 / 25 Nov 2013
Root Beer Guy
S5E43 / 02 Dec 2013
Apple Wedding
S5E44 / 13 Jan 2014
Blade of Grass
S5E45 / 20 Jan 2014
Rattleballs
S5E46 / 27 Jan 2014
The Red Throne
S5E47 / 10 Feb 2014
Betty
S5E48 / 24 Feb 2014
Bad Timing
S5E49 / 03 Mar 2014
Lemonhope (1)
S5E50 / 10 Mar 2014
Lemonhope (2)
S5E51 / 10 Mar 2014
Billy's Bucket List
S5E52 / 17 Mar 2014
Season 6
Wake Up
S6E1 / 21 Apr 2014
Escape from the Citadel
S6E2 / 21 Apr 2014
James II
S6E3 / 28 Apr 2014
The Tower
S6E4 / 05 May 2014
Sad Face
S6E5 / 12 May 2014
Breezy
S6E6 / 05 Jun 2014
Food Chain
S6E7 / 12 Jun 2014
Furniture & Meat
S6E8 / 19 Jun 2014
The Prince Who Wanted Everything
S6E9 / 26 Jun 2014
Something Big
S6E10 / 03 Jul 2014
Little Brother
S6E11 / 10 Jul 2014
Ocarina
S6E12 / 17 Jul 2014
Thanks for the Crabapples, Giuseppe!
S6E13 / 24 Jul 2014
Princess Day
S6E14 / 31 Jul 2014
Nemesis
S6E15 / 07 Aug 2014
Joshua & Margaret Investigations
S6E16 / 14 Aug 2014
Ghost Fly
S6E17 / 28 Oct 2014
Everything's Jake
S6E18 / 24 Nov 2014
Is That You?
S6E19 / 25 Nov 2014
Jake the Brick
S6E20 / 26 Nov 2014
Dentist
S6E21 / 28 Nov 2014
The Cooler
S6E22 / 04 Dec 2014
The Pajama War
S6E23 / 08 Jan 2015
Evergreen
S6E24 / 15 Jan 2015
Astral Plane
S6E25 / 22 Jan 2015
Gold Stars
S6E26 / 29 Jan 2015
The Visitor
S6E27 / 05 Feb 2015
The Mountain
S6E28 / 12 Feb 2015
Dark Purple
S6E29 / 19 Feb 2015
The Diary
S6E30 / 26 Feb 2015
Walnuts & Rain
S6E31 / 05 Mar 2015
Friends Forever
S6E32 / 16 Apr 2015
Jermaine
S6E33 / 23 Apr 2015
Chips & Ice Cream
S6E34 / 30 Apr 2015
Graybles 1000+
S6E35 / 07 May 2015
Hoots
S6E36 / 14 May 2015
Water Park Prank
S6E37 / 21 May 2015
You Forgot Your Floaties
S6E38 / 01 Jun 2015
Be Sweet
S6E39 / 02 Jun 2015
Orgalorg
S6E40 / 03 Jun 2015
On the Lam
S6E41 / 04 Jun 2015
Hot Diggity Doom
S6E42 / 05 Jun 2015
The Comet
S6E43 / 05 Jun 2015
Season 7
Bonnie and Neddy
S7E1 / 02 Nov 2015
Varmints
S7E2 / 03 Nov 2015
Cherry Cream Soda
S7E3 / 04 Nov 2015
Mama Said
S7E4 / 05 Nov 2015
Football
S7E5 / 06 Nov 2015
Stakes: Marceline the Vampire Queen (1)
S7E6 / 16 Nov 2015
Stakes: Everything Stays (2)
S7E7 / 16 Nov 2015
Stakes: Vamps About (3)
S7E8 / 17 Nov 2015
Stakes: The Empress Eyes (4)
S7E9 / 17 Nov 2015
Stakes: May I Come In? (5)
S7E10 / 18 Nov 2015
Stakes: Take Her Back (6)
S7E11 / 18 Nov 2015
Stakes: Checkmate (7)
S7E12 / 19 Nov 2015
Stakes: The Dark Cloud (8)
S7E13 / 19 Nov 2015
The More You Moe, The Moe You Know (1)
S7E14 / 03 Dec 2015
The More You Moe, The Moe You Know (2)
S7E15 / 03 Dec 2015
Summer Showers
S7E16 / 07 Jan 2016
Angel Face
S7E17 / 11 Jan 2016
President Porpoise Is Missing!
S7E18 / 12 Jan 2016
Blank Eyed Girl
S7E19 / 13 Jan 2016
Bad Jubies
S7E20 / 14 Jan 2016
King's Ransom
S7E21 / 15 Jan 2016
Scamps
S7E22 / 21 Jan 2016
Crossover
S7E23 / 28 Jan 2016
The Hall of Egress
S7E24 / 05 Mar 2016
Flute Spell
S7E25 / 12 Mar 2016
The Thin Yellow Line
S7E26 / 19 Mar 2016
Season 8
Broke His Crown
S8E1 / 26 Mar 2016
Don't Look
S8E2 / 02 Apr 2016
Beyond the Grotto
S8E3 / 09 Apr 2016
Lady Rainicorn of the Crystal Dimension
S8E4 / 16 Apr 2016
I am a Sword
S8E5 / 23 Apr 2016
Bun Bun
S8E6 / 05 May 2016
Normal Man
S8E7 / 12 May 2016
Elemental
S8E8 / 19 May 2016
Five Short Tables
S8E9 / 26 May 2016
The Music Hole
S8E10 / 23 Jun 2016
Daddy-Daughter Card Wars
S8E11 / 07 Jul 2016
Preboot
S8E12 / 19 Nov 2016
Reboot
S8E13 / 19 Nov 2016
Two Swords
S8E14 / 23 Jan 2017
Do No Harm
S8E15 / 23 Jan 2017
Wheels
S8E16 / 24 Jan 2017
High Strangeness
S8E17 / 25 Jan 2017
Horse and Ball
S8E18 / 26 Jan 2017
Jelly Beans Have Power
S8E19 / 27 Jan 2017
Islands: The Invitation (1)
S8E20 / 30 Jan 2017
Islands: Whipple the Happy Dragon (2)
S8E21 / 30 Jan 2017
Islands: Mysterious Island (3)
S8E22 / 31 Jan 2017
Islands: Imaginary Resources (4)
S8E23 / 31 Jan 2017
Islands: Hide and Seek (5)
S8E24 / 01 Feb 2017
Islands: Min & Marty (6)
S8E25 / 01 Feb 2017
Islands: Helpers (7)
S8E26 / 02 Feb 2017
Islands: The Light Cloud (8)
S8E27 / 02 Feb 2017
Season 9
Orb
S9E1 / 21 Apr 2017
Elements: Skyhooks (1)
S9E2 / 24 Apr 2017
Elements: Bespoken For (2)
S9E3 / 24 Apr 2017
Elements: Winter Light (3)
S9E4 / 25 Apr 2017
Elements: Cloudy (4)
S9E5 / 25 Apr 2017
Elements: Slime Central (5)
S9E6 / 26 Apr 2017
Elements: Happy Warrior (6)
S9E7 / 26 Apr 2017
Elements: Hero Heart (7)
S9E8 / 27 Apr 2017
Elements: Skyhooks II (8)
S9E9 / 27 Apr 2017
Abstract
S9E10 / 17 Jul 2017
Ketchup
S9E11 / 18 Jul 2017
Fionna and Cake and Fionna
S9E12 / 19 Jul 2017
Whispers
S9E13 / 20 Jul 2017
Three Buckets
S9E14 / 21 Jul 2017
Season 10
The Wild Hunt
S10E1 / 17 Sep 2017
Always BMO Closing
S10E2 / 17 Sep 2017
Son of Rap Bear
S10E3 / 17 Sep 2017
Bonnibel Bubblegum
S10E4 / 17 Sep 2017
Seventeen
S10E5 / 17 Dec 2017
Ring of Fire
S10E6 / 17 Dec 2017
Marcy & Hunson
S10E7 / 17 Dec 2017
The First Investigation
S10E8 / 17 Dec 2017
Blenanas
S10E9 / 18 Mar 2018
Jake the Starchild
S10E10 / 18 Mar 2018
Temple of Mars
S10E11 / 18 Mar 2018
Gumbaldia
S10E12 / 18 Mar 2018
Come Along With Me
S10E13 / 03 Sep 2018
Jeremy Shada
Finn the Human (voice)
John DiMaggio
Jake the Dog (voice)
Tom Kenny
Ice King (voice)
Hynden Walch
Princess Bubblegum (voice)
Olivia Olson
Marceline the Vampire Queen (voice)
Niki Yang
BMO / Lady Rainicorn (voice)
Pendleton Ward
Lumpy Space Princess (voice)
