Our Decay

"I gave you what you wanted, which she had. It... it's not perfect. The Underworld is a place of, uh, well... destruction. Despite my best intentions, things don't grow here. They... decay... but it's our decay."

- Hades to Zelena

"Our Decay" is the sixteenth episode of Season Five of ABC's Once Upon a Time. It was written by Tze Chun & Dana Horgan, and directed by Steve Pearlman. It is the one-hundredth and fourth episode of the series overall, and premiered on April 3, 2016.

Synopsis
Emma, Snow, David, Regina, Robin, Henry and Hook continue to search for a way to free everyone from the Underworld. At the mercy of Hades, Gold creates a portal to Storybrooke, which transports Belle, Zelena and Baby Hood to the Underworld. While Zelena and Regina get into a sibling squabble, Belle is reunited with Rumple only to learn some tremendously shocking news that will change her life forever. Meanwhile, Snow and David hopelessly attempt to send a message from the Underworld to their son, Neal. In flashbacks, Hades learns about Zelena’s very special spell and pays her a visit in Oz with the intention of striking an alliance, but finds himself with more than just a partner in crime.

Starring

 * Ginnifer Goodwin as Mary Margaret Blanchard
 * Jennifer Morrison as Emma Swan
 * Lana Parrilla as Regina Mills
 * Josh Dallas as David Nolan
 * Emilie de Ravin as Belle French
 * Colin O'Donoghue as Hook
 * Jared S. Gilmore as Henry Mills
 * Rebecca Mader as Zelena
 * Sean Maguire as Robin Hood
 * Robert Carlyle as Mr. Gold

Guest Starring

 * Emma Caulfield as the Blind Witch
 * Greg Germann as Hades
 * Teri Reeves as Dorothy Gale
 * Paul Scheer as the Scarecrow (Voice)
 * Keegan Connor Tracy as Mother Superior

Co-Starring

 * Ray Boulay as Oz Guard
 * Jeff Gulka as Munchkin #1
 * Donny Lucas as Sad-Eyed Man

Uncredited

 * Rose McGowan as Cora*
 * Unknown baby as Zelena*
 * Unknown baby as Baby Hood
 * Unknown baby as Prince Neal
 * Unknown dog as Dorothy's dog

Trivia
Production Notes=

Production Notes

 * The title card features Munchkins.
 * -|Episode Connections=

Event Chronology

 * The Underworld events take place after "The Brothers Jones".
 * The Oz events from take place years after "Kansas".
 * The Storybrooke events take place after "Devil's Due".

Episode Connections

 * -|Cultural References=

Fairytales and Folklore

 * This episode is a rendition of The Wonderful Wizard of Oz story, with the Wicked Witch of the West and Dorothy Gale.
 * This episode features Hades from Greek Mythology, Captain Hook from the Peter Pan story, Robin Hood from the ballad, and the Blind Witch from the Hansel and Gretel fairytale.
 * The Scarecrow, Toto, and the Munchkins from The Wonderful Wizard of Oz also appear, as well as the Underworld from Greek Mythology.

Pop Culture

 * The way Zelena calls Dorothy "my pretty" is a reference from the 1939 film The Wizard of Oz
 * The munchkin Boq is a reference to the character of the same name from the novel "Wicked". However, that name is also in The Wonderful Wizard of Oz.