In the Emerald City of Oz, Zelena watches Rumplestiltskin train Regina through the portal, as she plots her scheme to destroy her half-sister.
Glinda then arrives to tell Zelena about her true destiny, and wants her to meet her real sisters, who then offer her a chance to become the Witch of the West after she is introduced.
Glinda, on behalf of her sisters, then gives Zelena the light pendant that will harness and protect her as it grows her powers, but tells her that once it is removed she will be powerless.
It appears that Dorothy has won over the other witches, except for Zelena, who now has become more envious of this latest visitor to their world (as evidenced by her green skin returning), and as she watches from the well, Glinda comes over to talk to her.
However, after Dorothy disappears, Glinda discovers that the person that was behind the curtain was none other than Zelena, who was pretending to be the Wizard and survived the "melting" by reappearing after the incident.
Now that she knows about her being the true threat and revealing her as the greatest evil, Zelena banishes Glinda to a pocket dimension within the northern region of the Enchanted Forest, where she can never tell the others.
As David Nolan, Mary Margaret, Emma Swan, and Henry Mills arrive at the hospital for the delivery of the baby, Dr. Whale is there and ready to prep.
Zelena also knocks out Regina, after she tells Henry and Archie to hide, since Emma's protection spell faded, after she sacrificed her magic to save Hook.
Back at the farm, Zelena places the baby at the edge of the circle and starts her spell, only to be interrupted by Emma, David, Hook, Robin Hood, and Regina, resulting in a battle.
The loss of Zelena's powers results in her flying monkeys returning to human form, including Little John (who is nearly beheaded by David).
Later on at the jail, Regina tries to reason with Zelena in an effort to redeem herself by saying that evil isn't born, it's made and so is being good, and leaves her with an offer to change her ways.
Although it won its timeslot for the fourth week in a row, the episode placed a 2.1/6 among 18- to 49-year-old adults, with only 6.86 million viewers tuning in, a one-point drop from the previous outing.
Hillary Busis of Entertainment Weekly gave it a great review: "Around 8:55 p.m. tonight, it seemed that every conflict at the center of season 3B had finally been resolved.
(He's a powerful, enigmatic, once-married longtime bachelor finally re-committing after a lengthy stretch of solitude; just think of Rump as the Enchanted Forest's answer to George Clooney.)
And to top it all off, Snow and Charming's royal bundle of joy had finally been born, kidnapped, and returned to his loving parents -- all before the couple even had a chance to give the baby a name.