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Episode Info



The Depths of Cousin Fethry! is the second episode of Season 2 and the 25th episode of DuckTales 2017. It first aired on October 27, 2018, on Disney Channel.

Synopsis

Huey and Dewey are led on an adventure by their distant cousin Fethry Duck, who takes them to the depths of Scrooge's deep-sea laboratory.

Plot

While observing items in Scrooge's office, Huey and Dewey notice Scrooge's "can" ringing. Scrooge and Donald explain it's Donald's cousin Fethry calling from a top-secret deep sea lab to report an amazing discovery. They discourage the boys from answering, as Fethry usually calls them down for an adventure that involves explosions and other catastrophic events only to show them something he found interesting, like a funny-looking barnacle formation. However, Huey and Dewey are attracted to the idea of going on an adventure with a scientist cousin and steal Scrooge's sub with Launchpad's help.

While Launchpad is inexplicably called off by a figure he knows as "Oceanika," his love, Huey and Dewey meet Cousin Fethry, who immediately strikes them as a bit eccentric. Fethry happily greets them as "Little Donalds" and casually explains that he is Donald's favorite cousin. He takes them down in an aquavator towards the McDuck Sub Lab. Along the way, Dewey notes some kinship between Huey and Fethry, including their interest in bizarre facts and rather odd habit of observing their surroundings and memorizing the Junior Woodchuck Guidebook, about which Huey grows insecure over the course of this episode.

The aquavator's descent is slowed by a blast from some hydrothermal vents, so Fethry makes a pit-stop at a mid-descent station called the Tully Observatory to meet his "team." They are attacked by a group of Giant Sea Worms mutated from the toxic vents. The worms can only be dissuaded from killing them through genuine displays of affection. Fethry and Huey are easily able to show the worms affection and give them compliments, but when Dewey is unable to come up with genuine compliments, Huey ultimately is forced to kiss one of the worms to get them to leave Dewey alone. Fethry introduces his "team": a group of glowing krill that he has individually named in a jar of water.

They continue their descent towards the sub lab in the aquavator, where Dewey emphasizes Huey and Fethry are bizarrely similar, from the nerd-out gene, obsession with weird stuff, and even wearing a red hat they don't take off. Fethry is also a Junior Woodchuck and, like Huey keeps, his guidebook under his hat, which even weirds out Huey. Before they can continue, they realize that something has cut the cable to the bottom observatory, forcing the group to don diving outfits to reach Fethry's private pod, swimming through the field of hydrothermal vents. When the light from the aquavator shuts off, Fethry sings to his krill, causing them to light up and guide their way to the pod.

Upon reaching the pod, they learn the truth of Fethry's discovery: a group of glowing multi-colored krill that he spotted floating outside the porthole. When the boys are, of course, disappointed, Fethry is shocked to realize they thought he was a scientist, and reveals he's just the custodian for the lab. The boys are frustrated and are prepared to angrily depart when a giant monster appears outside the porthole, a discovery which satisfies Dewey.

They quickly swim away from the monster through the field of erupting hydrothermal vents, which gradually destroy the rest of the lab. They make it back to the aquavator to start their ascent but are stopped by the continued eruptions which cause the aquavator to start flooding. Huey and Dewey use the aquavator's light to try to blind the monster, only for Fethry to realize the monster is Mitzy, one of the krill on his team, who mutated into a gigantic size from exposure to the toxic vents. Dewey continues trying to blind Mitzy, leading to a struggle between him and Fethry. Realizing Mitzy is trying to help them, Huey turns on the exterior speakers and sings Fethry's lullaby to Mitzy, which elicits a reaction; she calms down before helping bring the deteriorating aquavator back to the surface. Encouraged by the adventure, Fethry decides to go and become a scientist for real, although he is unsure how to do so. He thanks the boys and has Mitzy take him away. Huey remarks that Fethry is very weird, but Dewey assures him there is nothing wrong with that.

They return to the sub just as Launchpad returns decked out in oceanpunk gear, bidding "Oceanika" goodbye. Huey directs them all to head home so they can convince Scrooge "this was Louie's idea."

Cast

Trivia

  • Main Cast Absences: Louie, Webby, and Mrs. Beakley.
  • This is Fethry's first animated appearance.
  • The deep sea lab is mentioned as having been built in 1964. This is most likely a nod to Fethry's comic book debut.
  • This is the second time Launchpad has gone on an apparently-eventful off-screen adventure, the first time being "The House of the Lucky Gander!"
  • Tully Observatory is named after deep sea microbiologist and husband of DuckTales writer Colleen Evanson, Benjamin Tully, who consulted on the science for this episode.

References

vedDuckTales 2017 episodes
Season 1
Pilot (37).png Angry scary pig.png The Great Dime Chase Quackfaster 4.png Maxresdefault (3).jpg
Episodes 1
Woo-oo!
Episodes 2
Daytrip of Doom!
Episodes 3
The Great Dime Chase!
Episodes 4
The Beagle Birthday Massacre!
Terror of the Terra-firmians scary monster (2).png Maxresdefault.jpg Dewey - My face looks like a butt.png TothRa(40).png
Episode 5
Terror of the Terra-firmians!
Episode 6
The House of the Lucky Gander!
Episode 7
The Infernal Internship of Mark Beaks!
Episode 8
The Living Mummies of Toth-Ra!
Huey and scrooge see webby yodel.png The Spear of Selene 19.jpg Beware the B.U.D.D.Y. System Fentons laboratory (6).png Webby playing vuvuzela again.png
Episode 9
The Impossible Summit of Mt. Neverrest!
Episode 10
The Spear of Selene!
Episode 11
Beware the B.U.D.D.Y. System!
Episode 12
The Missing Links of Moorshire!
Dewey playing on duckworth's legs.png Adventures in Duckburg (8).png LIFEISLIKEAGOLDENLAGOONHEREINWHITEAGONYCREEK.png Day of the Only Child Creepy Doofus 7.png
Episode 13
McMystery at McDuck McManor!
Episode 14
Jaw$!
Episode 15
The Golden Lagoon of White Agony Plains!
Episode 16
Day of the Only Child!
Screenshot 20181104-171314.jpg Who is Gizmduck Huey and Gizmoduck 3.png Screen Shot 2018-07-28 at 11.50.23 PM.png Don Karnage smile.png
Episode 17
From the Confidential Casefiles of Agent 22!
Episode 18
Who is Gizmoduck?!
Episode 19
The Other Bin of Scrooge McDuck!
Episode 20
Sky Pirates…in the Sky!
Medium-clean.jpg Scrooge - Which she stole early!.png DuckTales 2017 Magica.jpg
Episode 21
The Secret(s) of Castle McDuck!
Episode 22
The Last Crash of the Sunchaser!
Episode 23
The Shadow War!"
Season 2
FFAB4BB9-B294-4555-9572-CA331064720E.jpeg The Depths of Cousin Fethry undersea escape (11).png Louie and webby screaming at glomgold.png Ducktales-season-2-episode-4-the-town-where-everyone-was-nice.png
Episodes 1
The Most Dangerous Game...Night!
Episodes 2
The Depths of Cousin Fethry!
Episodes 3
The Ballad of Duke Baloney!
Episodes 4
The Town Where Everyone Was Nice!
Storkules in Duckburg Harpies defeated (8).png Battle.jpeg Dellafirstep (121).png Louie booing at dewey.png
Episodes 5
Storkules in Duckburg!
Episodes 6
Last Christmas!
Episodes 7
What Ever Happened to Della Duck?!
Episodes 8
Treasure of the Found Lamp!
152086 0002-450x0.jpg The 87 Cent Solution Gizmoduck (36).png Dewey throws confetti.png Nothing Can Stop Della Duck! (45).png
Episode 9
The Outlaw Scrooge McDuck!
Episode 10
The 87 Cent Solution!
Episode 11
The Golden Spear!
Episode 12
Nothing Can Stop Della Duck!
Raiders of the Doomsday Vault (92).png 20200628 164954.JPG A little too late.jpg The Duck Knight Returns 10.png
Episode 13
Raiders of the Doomsday Vault!
Episode 14
Friendship Hates Magic!
Episode 15
The Dangerous Chemistry of Gandra Dee!
Episode 16
The Duck Knight Returns!
Lunarispsycho (2).png Goldie 10.png A Nightmare on Killmotor Hill Dewey High 8.png The Golden Armory of Cornelius Coot Beagles in Fort Duckburg.png
Episode 17
What Ever Happened to Donald Duck?!
Episode 18
Happy Birthday, Doofus Drake!
Episode 19
A Nightmare on Killmotor Hill!
Episode 20
The Golden Armory of Cornelius Coot!
Roxanne Timephoon 2.png GlomTales (34).png The Richest Duck in the World Bombie chase 1.png Moonvasion203.png
Episode 20
Timephoon!
Episode 21
GlomTales!
Episode 23
The Richest Duck in the World!
Episode 24
Moonvasion!
Season 3
Challenge of the Senior Junior Woodchucks 13.png Quackpack 32.png Rescue Rangers and Launchpad.jpg Mervanaharp (12).png
Episode 1
Challenge of the Senior Junior Woodchucks!
Episode 2
Quack Pack!
Episode 3
Double-O-Duck in You Only Crash Twice!
Episode 4
The Lost Harp of Mervana!
Louies eleven 15.png BOYD and Huey.jpg Dewey roaring in The Rumble for Ragnarok!.png The Phantom and the Sorceress (46).png
Episode 5
Louie's Eleven!
Episode 6
Astro B.O.Y.D.!
Episode 7
The Rumble for Ragnarok!
Episode 8
The Phantom and the Sorceress!
They Put a Moonlander on the Earth (26).png The Trickening - HUEY, WEBBY, LOUIE, DEWEY.jpg The Forbidden Fountain of the Foreverglades (13).png Let's Get Dangerous! Darkwing trio.jpg
Episode 9
They Put a Moonlander on the Earth!
Episode 10
The Trickening!
Episode 11
The Forbidden Fountain of the Foreverglades!
Episode 12
Let's Get Dangerous!
Escape from the ImpossiBin! (5).png The Split Sword of Swanstantine! (33).png New Gods on the Block! - STORKULES, ZEUS, SELENE.png The First Adventure! Young Scrooge, Della, and Donald.jpg
Episode 13
Escape from the Impossibin!
Episode 14
The Split Sword of Swanstantine!
Episode 15
New Gods on the Block!
Episode 16
The First Adventure!
DellapictureFightForMcDuck (2).png How Santa Stole Christmas! (5).png Beaks in the Shell! (28).png The Lost Cargo of Kit Cloudkicker! (24).png
Episode 17
The Fight for Castle McDuck!
Episode 18
How Santa Stole Christmas!
Episode 19
Beaks in the Shell!
Episode 20
The Lost Cargo of Kit Cloudkicker!
The Life and Crimes of Scrooge McDuck! (10).png The Last Adventure! (15).png The Last Adventure! (82).png The Last Adventure! (120).png
Episode 21
The Life and Crimes of Scrooge McDuck!
Episode 22
A Tale Of Three Webby!
Episode 23
The Lost Library of Isabella Finch!
Episode 24
Tale's End!
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