In the third-season opener, Henry's search party arrive in Neverland and encounter some unwelcoming mermaids. Meanwhile, Henry and a fellow prisoner escape the Lost Boys; and Neal and Mulan trek through the Enchanted Forest.
Peter Pan presents Emma with a map of Henry's location, but there's a catch: Emma must come to terms with her true identity. Meanwhile, Mr. Gold gets some surprising advice; and back in fairy-tale land, the Evil Queen has a tempting offer for Snow White.
Hook wants to search for Tinker Bell, believing she will lead the way to Peter Pan's hideout. Meanwhile, Neal hopes to use a treasured item of Robin Hood's in order to reach Emma; and back in fairy-tale land, Tinker Bell has a tempting offer for Regina.
A faithful Lost Boy captures Neal. Meanwhile, Mr. Gold confronts Peter Pan; David fights for his life as the poison grows stronger; and back in fairy-tale land, Rumplestiltskin looks for Bae, who's fallen prey to a music-playing figure who snatches kids.
Hook brings an ailing David on an excursion to find a map of a way off of Neverland. Meanwhile, back in fairy-tale land, Killian and his brother are commissioned by the king to go to an unfamiliar land and locate a plant with healing properties.
Back in fairy-tale land, Ariel saves Snow White from drowning, so Snow White repays this act of kindness by helping Ariel bond with Prince Eric. Meanwhile, Regina and Mr. Gold unite and go after Peter Pan; and Henry's search party focus on saving Neal.
Ariel heads to Storybrooke, where she seeks out Belle to help her find a mysterious artifact. Meanwhile, Emma, Neal and Hook set out to capture Peter Pan's shadow; and Mary Margaret is displeased with David for keeping his poisoning a secret from her.
Peter Pan and Henry head to a curious cave. Meanwhile, Henry's search party reach Peter Pan's camp; and back in fairy-tale land, an enchanted item allows a young Rumplestiltskin to start anew with his neglectful dad.
Peter Pan tries to assume full magical powers, but Henry's family seek to halt this transformation as Henry faces death. Meanwhile, a flashback to an earlier time in Storybrooke finds a lonely Regina deciding to adopt a baby.
Henry and his search party are welcomed back into town after leaving Neverland, but everyone's in the dark about Peter Pan's latest ruse. Meanwhile, back in fairy-tale land, Snow White deviates from her honeymoon plans to search for a legendary creature.
Emma and Regina join forces to figure out who's behind the new curse. Meanwhile, back in fairy-tale land, Robin Hood helps Regina break into her castle, which is occupied by the Wicked Witch of the West.
Neal shows up in Storybrooke longing to reunite with Henry and Rumplestiltskin. Meanwhile, back in fairy-tale land, Neal wants to use magic to resurrect his father, and he turns to Belle and Lumiere for assistance.
Zelena challenges Regina to a duel to the death, but also tells her about their familial connection. Meanwhile, the townsfolk mourn Neal's passing; and in Oz, Zelena wants to be sent to fairy-tale land after learning that she has a sister who is being trained by Rumplestiltskin.
Ariel seeks Hook's help in locating Prince Eric. Meanwhile, Regina becomes Emma's tutor in magic; Mary Margaret and David try to show Henry they're not as dull as he thinks they are; and back in fairy-tale land, Hook and Ariel search for his stolen ship.
Regina tries to connect with a deceased Cora in order to find out why Zelena was abandoned. Meanwhile, Belle uncovers Zelena's true objective; and back in fairy-tale land, young Cora is tricked by a fake prince before she meets a real royal.
Zelena threatens Henry's life if Hook doesn't kiss Emma with his cursed lips. Meanwhile, Regina and Robin Hood's romance intensifies; and back in fairy-tale land, Snow and Charming seek help from Glinda, the Good Witch of the South.
Mary Margaret is in labor and the townsfolk try to protect her from Zelena, who wants to seize the newborn. Meanwhile, back in the Oz of the past, Glinda attempts to entice Zelena to help her safeguard Oz, but a young girl from Kansas causes problems.