Guinevere becomes upset when King Arthur grows obsessed over finding the missing half of Excalibur, so she and Lancelot make their way to the Vault of the Dark One, and find the missing half, which is none other than the Dark One's dagger. They're unable to get a hold of the blade due to its protection, but Rumplestiltskin, the Dark One soon makes himself known, and agrees to make a trade with the two for the second best thing. In exchange for the gauntlet, Rumple offers a magic sand that can fix what's broken; it can give the illusion Excalibur is whole. They accept, and head back to Arthur, while Lancelot decides to leave Camelot. Arthur witnesses the two saying a heartfelt goodbye, and when Guinevere returns to her tower, she ends up not going through with using the sand. She instead co