'Once Upon A Time' Season 5 Episode 16 Spoilers: Did Hades And Zelena Strike A Bargain?

"Once Upon A Time" Season 5 Episode 16 will trail Emma Swan (Jennifer Morrison), Snow (Ginnifer Goodwin), David Nolan (Josh Dallas), Regina Mills (Lana Parilla), Captain Hook (Colin O'Donoghue) and Henry (Jared Gilmore) in their mission to save Storybrooke citizens from the Underworld. However, "Once Upon A Time" Season 5 Episode 16 will offer a fresh web of revelations, ploys and deceit starting with what Hades (Greg Germann) found when he tried to reach out to the Wicked Witch Zelena (Rebecca Mader).

Comic Book further outlines "Once Upon A Time" Season 5 Episode 16, which is called "Our Decay," with Hades finding easy access to Storybrooke through Gold's (Robert Carlyle) help. Because of this portal, Belle French (Emilie De Ravin), Zelena and Baby Hood will find themselves in the Underworld in "Once Upon A Time" Season 5 Episode 16.

Rumplestiltskin will use the events in "Once Upon A Time" Season 5 Episode 16 to announce a shocking revelation to Belle. While Rumplestiltskin and Belle have been tested repeatedly in previous events, "Once Upon A Time" Season 5 Episode 16 may yet present one of the biggest challenges in their relationship.

Carter Matt points out that the unfolding of "Once Upon A Time" Season 5 Episode 16 will see how the Wicked Witch Zelena and Hades may have actually shared a history. What was the bargain between the lord of the Underworld and the Wicked Witch and how has that materialized in "Once Upon A Time" Season 5 Episode 16? Will Snow and David find a way to reach Neal (Michael Raymond-James) from the Underworld?

Sticking up for his love, now that's Charming. #MCM https://t.co/fEmTkfTSXK

— Once Upon A Time (@OnceABC) March 28, 2016

"Once Upon A Time" Season 5 Episode 16 will not cut the characters any slack. If anything, "Once Upon A Time" Season 5 Episode 16 will see the plot twist into heightened complication. ABC will air "Once Upon A Time" Season 5 Episode 16, "Our Decay" on April 3.