Written by Dana Horgan & Leah Fong and directed by Mick Garris, it premiered on ABC in the United States on October 27, 2017.

In the episode, Rumpelstiltskin's life with Belle is explored and the consequences that awaits the couple, while in the Present, Weaver must deal with a suddenly unstable Tilly, when Victoria demands that she be brought back under his control, and Ivy takes Lucy out for a Halloween trick-or-treat that goes awry.

Halloween themed decorations are seen in the forest It has been a year after the Final Battle, and Gold and Belle now enjoy life in Storybrooke as a family with their son Gideon.

Belle finds a solution which says they must travel to the Edge of Realms and wait for sunset after an eternal day, which will finally allow them to get rid of the dagger and the darkness forever.

A distraught Rumple suggests that he uses his powers to heal her and reverse her aging, only to discover that Belle had known he couldn't dispose of the dagger here.

She knew, from ages ago, that the "sunset" referred to in the prophecy signified her own death, and wanted to live a happy life with Rumple and Gideon before passing, which she did.

At Belle's grave, Gideon, having returned to pay respects to his mother, offers to take the dagger and use it to transfer the darkness into himself so that Rumple can join his wife in death.

Tilly believes that everyone in Hyperion Heights are all pieces of the same puzzle, but they're all "wearing masks" (a reference to the Halloween theme of the episode).

The two then head at the train tracks for the answer, and while en route Weaver handed Tilly a sandwich that was secretly laced with the pills' ingredients.

Suddenly Tilly, having bitten into the sandwich, begins complaining about the pills making her small and, in a White Rabbit-eqse fashion, bails out of the vehicle.

In between the situation, Jacinda drops off Lucy's Halloween costume to Ivy, who has been tasked with taking her step-niece around the neighborhood to get candy.

Around the same time, Roni consoles Henry after trying to get used to having lost his family, but suggested that he move on and try to find happiness again by pursuing Jacinda.