I've found the Ducktales MIB fanfiction:
GenderBurg, the hometown of Scrooge McTranny, the richest tranny in the world.
His most precious treasure is his first comic: Ciel Issue #0, a comic he created in primary school.
Tranica De Scum, the truscum witch, wants to steal Tranny Scrooge first comic because it will give her gender neutral super powers to conquer the world.
Tranica rings at Tranny Scrooge's door, while holding an edited selfie in front of the camera, because she is a truscum and truscums are not true and honest.
Tranica gets invited to join Scrooge for a sleepover, she sneaks to the first comic.
Before being surrounded by Scrooge guards, Tranica has read enough of the comic to get one shoot of gender neutral eye laser.
Since she can only shoot once, she has to shoot the right target.
She could shoot Scrooge but he would be immune, so she shoots to the moon.
The Laser impact on the moon surface produced a shockwave strong enough to awake the hibernating crew of an UFO stationned for many decades on the hidden face of the Moon.
The UFO landed on Earth to inverstigate on the energy source that produced the laser.
Some black humanoids came out of the UFO.
They are Men In Black because they wear black uniform with a red armband.
They kidnap Scrooge and turn him into an infinite source of vREEl energy that gives them the power to bend space and time.
They use the power to warp Rosemont to 1940 Dunkirk, allowing the Nazi to continue their march seizing Montreal.
Huey, Dewey, and Louie helped them to send all trannies to Guantanamo because they were white cis males.
Only Webby was left alone hidden in Scrooge's Mansion.
Webby reads the Tranny Woodchucks's Guidebook and discovers how to transform her girlpenis into a telepathy antenna to contact Stephie, and because girls have all kinds of bodies.
Stephie explains her:
Take a pedal boat and go to the Arecibo antenna.
With your girlpenis you will be able to send a message to the whole multiverse.
If all girls in heart jerk their girlpenis at the same time, it will produce enough Serious Trans Vibes to summon Gender's greatest champion, Captain Gender.
Don't forget to recycle! said Captain gender, because recycling is good for the environment.
Next floppy is damaged, I must send it to a data recovery company to recover next part of the story.
That's so expensive, donate to my patreon!
Or you're a Nazi to keep me from publishing the part where Hitler gets beaten his ass by Stephie's girlpenis power.