Joybreak!

Joybreak! is a 2-part episode of Ducktales.

Synopsis
Scrooge McDuck and the others must escape the joy virus and find a cure.

Plot
In the McDuck Manor, Scrooge was thinking about something that makes the Citizens happy And Huey wanted to give a try. He build a machine that could make everyone happy. He tested out by using a test subject. the two unhappy ducks. He zapped the two and then the machine was broken. it was glitching so bad. that the two ducks went completely insane and joyful. The ducks touched a citizen. And that Citizen was infected. And other citizens ran away as fast as they can.

Cast
David Tennant - Scrooge McDuck

Beck Bennett - Launchpad McQuack

Danny Pudi - Huey Duck

Ben Schwartz - Dewey Duck

Bobby Moynihan - Louie Duck/Citizen #4

Kate Micucci - Webby Vanderquack/Citizen #2

Tony Anselmo - Donald Duck

Grey Griffin - Citizen #1,3/

Trivia

 * This episode is based on The Joy, Train To Busan, and Cooties
 * The differences are the cure is a magical liquid and everyone is cure.
 * It was the creepiest and scariest episode according to fans.