Hook and Emma were reunited in last week’s ONCE UPON A TIME, but getting Hook back is just half the battle in getting out of the Underworld. Now our team of heroes must find a way to defeat Hades so they can return to Storybrooke.
But they’re sidelined when they get a visit from Hook’s departed brother, Liam, who might be able to provide the lead they were looking for. Liam tells them of others who have tried to overthrow Hades and who spoke of a book that contained the key to his downfall. As the others search for the book, Henry secretly takes matters into his own hands. Meanwhile Hades, who isn’t happy about the usurpers in this realm, redoubles his efforts to trap the heroes by playing them against one another.
Finally, we’ll see flashbacks with the two young Jones brothers (Killian and Liam) as their bond is tested and strengthened on a merchant ship that is heading into a dangerous storm.