In this episode, Hook's past encounter with Captain Nemo is revealed, as the Evil Queen drives a wedge into Henry and Hook while she and Zelena attempt to stop Snow and David from finding Archie, and Emma suddenly learns the fate to Jasmine's kingdom from Aladdin.
The Enchanted Forest events take place at the time of the first Dark Curse, after Emma decided to stay in Storybrooke in "Pilot" (which is when time started moving again in the Enchanted Forest, according to "Broken") and before the curse is broken in "A Land Without Magic".
Hook is yelling at his crew on the Jolly Roger when he is soon confronted by an unknown man who snuck aboard the vessel.
As Nemo opens the treasure chest, he reveals a key to the gateway of the "Mysterious Island," where they can each start a new life that is devoid of loss.
When Zelena and the Evil Queen hear Robin crying, they are given a warning from Regina, Snow, and David, and disappear.
At Granny's, Aladdin, who no longer sees himself as The Savior, is being convinced by Jasmine to help save Agrabah.
She tells him that like him, she has run from her duty as the Savior many times, but always came back to it because it was right, prompting Aladdin to open up to Emma about what happened in Agrabah.
After Henry escapes, Killian is suddenly confronted by his half-brother Liam, who explains that Hyde took Nemo to the Mysterious Island which is revealed to be the Land of Untold Stories.
Belle later drops a picture of the ultrasound at the door of the Pawn Shop as The Evil Queen visits and seduces Gold, but doesn't walk in.
The kraken is a legendary sea monster of giant size that is said to dwell off the coasts of Norway and Greenland.