Once Upon A Time Season 5 Episode 18: Ruby Slippers Sneak Preview & Synopsis

ABC has released a sneak preview and an official synopsis for next Sunday's "Ruby Slippers" episode of Once Upon a Time.

In flashbacks, Ruby and Mulan find themselves in Oz, where they meet Dorothy. After the three witness Zelena's return to Oz, they look for a way to defeat her once and for all. However, Dorothy mysteriously disappears, and Ruby's search for her new friend lands her in the Underworld. Reunited with the heroes, Ruby teams up with Emma, Regina and Snow to continue looking for Dorothy. Meanwhile, Snow and David struggle with not being able to be with their son, Neal, and devise a plan so that one of them can escape the Underworld.

Guest stars include Meghan Ory as Ruby/Red, Jamie Chung as Mulan, Victoria Smurfit as Cruella De Vil, Teri Reeves as Dorothy, Emma Caulfield as the Blind Witch, Paul Lazenby as Claude, Gina Stockdale as Auntie Em and Greg Germann as Hades.

Watch a trailer for the episode in the video below.

The episode was written by Andrew Chambliss & Bill Wolkoff and directed by Eriq La Salle.

"Ruby Slippers" episode of Once Upon a Time will air Sunday, April 17 (8:00-9:00 p.m. EDT), on the ABC Television Network.

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