Plot summary
In the past in Oz, Zelena's plot to create a time travel portal is derailed by the return of Dorothy Gale. When Hades arrives to help Zelena with her plan to steal the Scarecrow's brain, the two find romantic feelings for each other but, after they succeed, Zelena turns on Hades, believing that he is using her in order to get even with Zeus. In the Underworld, Hades forces Gold to create a portal that brings Zelena, Belle, and Zelena's baby to the Underworld. Unfortunately, when they arrive, Zelena discovers that Hades is behind the plot and that her magic is too weak to protect her child, while Belle learns the truth from Gold about his reclaiming his powers and her pregnancy, as well as the contract now with Hades.
Zelena gives up her daughter to those who can better protect her, determined to keep Hades from using her to enact the time-travel portal, only to discover his love for her is unchanged. Meanwhile, Snow and David find a way to contact their son, and Henry starts to write stories in his sleep.
Credits
Adapted from Wikipedia contributors, Once Upon a Time season 5. HTML formatting and reference markers removed.