"Poor Unfortunate Soul" is the fifteenth episode of the fourth season of the American fantasy drama series Once Upon a Time, which aired on March 22, 2015.
She explains to Hook that her father kicked her out of his kingdom for disobeying him, so she stole a magical bracelet that allowed her to walk on land.
Although he refuses to break his personal code, Hook asks Ursula to steal the squid ink from her father’s storage.
Ursula agrees, only to have Poseidon catch her, and in return for Hook betraying him, takes away his only chance to seek revenge on Rumplestiltskin.
At Gold's remote cabin, Regina, Maleficent, Cruella, and Ursula start interrogating adult August Booth about the Author.
This information gives Hook an idea as he reveals his past encounter with Ursula, saying that the time has now come to take advantage of the Sea Goddess and to restore her happy ending.
When Ursula asks Hook where the magical shell is, he responds that it is located inside the Jolly Roger back in the Enchanted Forest.
Regina is still trying to control her feelings for Robin Hood, and has a nightmare in which she fights the "Evil Queen" version of herself over the affections of her former love.
After Ursula and Poseidon are reunited and leave, Hook tells Emma that his happy ending is to be with her, but he fears he will lose her because he is a villain.
By that, of course, I’m referring to the Queens of Darkness—an exclusive club that may have just become a duo (plus or minus a double-crossing Regina), now that Ursula has apparently achieved her happy ending.