Firebird (Once Upon a Time)

Emma collected information about Cleo so that Tasha could know more about her birth mother, and she is sad but appreciative.

Before she leaves, Emma purchases the red leather jacket (later referred to by Hook as her "armor") that would become part of her trademark wardrobe.

In the moments after Regina encouraged Zelena to pursue a relationship with Hades, the move has the outsiders, especially Hook, unhappy with this new development.

But before tensions start to reach a boiling point, Hades appears and informs them that Zelena had been kidnapped by Gold and Peter Pan.

Hades agrees to Gold's demands and rips up the contract, only for Pan to reveal that he will take Zelena's heart as part of his plan to return to the living.

As part of the arranged deal with Emma along with Hades' new freedom, a portal to Storybrooke can open which will close at sunset.

According to what worked in that tale, Hook must acquire Ambrosia, the food of the gods, to restore his body and be reunited safely with his body; but in order to get to the Ambrosia, Emma has to go deep into the Underworld, and face a test to determine whether her love for Hook is true, by testing her heart.

Meanwhile, Henry, in his role as the Author, successfully helps the resident complete their "unfinished business," which will allow them to leave.

However, Cruella and the Blind Witch lock the outsiders in the library, in their plot to take over the Underworld in Hades' absence, and to keep them away from the portal.

Regina suspects the Blind Witch had help from Hades since she's doesn't usually cast that strong magic.

This has left Emma with two choices, saving her heart or Hook, and when she chooses the latter, a door opens as she is deemed worthy, only to discover that the tree had been cut down, and the leftover Ambrosia had been dead for a long time.

Knowing that there is no other way to bring him back to the living, Hook wants Emma to go on without him and decides that it's time to say goodbye and vows not to let her be his unfinished business.

Instead, he had put a wineskin that he had filled with water from the River of Lost Souls and glamoured as Robin's heart into Pan's body.