DISCLAIMER: If you have not watched this episode and do not want it spoiled for you, DO NOT READ ON.
So first I'd like to go over my pride and joy, CaptainSwan. Towards the beginning of the episode, Hook saw Emma sitting outside making dream catchers, and he got very defensive, telling Merlin that he wasn't helping her. Emma and Merlin had to go on a quest, so while saying goodbye, Hook gave Emma his ring, telling her that it might be the reason he was alive and it would bring her home to him. They said they loved each other and everything, so basically I was smiling like an idiot for the entire scene.
In a flashback, we saw that Merlin gained his magic and immortality by drinking from the Holy Grail about 1000 years ago. Fast forward about 500 years and you get a maiden named Nimue coming to Merlin for help. Nimue and Merlin fell in love, but Nimue wanted to be immortal like Merlin so that they could spend eternity together. Merlin said no, but suggested that they could forge the Holy Grail into a sword to cut away his immortality so that they could grow old together. Nimue also wanted revenge on a mysterious man who had terrorized her village. While turning the cup into a sword, the mysterious man showed up so that he could take the cup and become immortal. He "killed" Nimue and took the sword, but then Nimue stood up and took his heart. Apparently, Nimue had secretly drank from the Holy Grail. Out of vengeance, she crushed the man's heart and became dark. She broke the sword so that Merlin couldn't use it, and it broke into two pieces: Excalibur and the Dark One's dagger. Nimue was the first Dark One.
Back to Camelot, Emma and Merlin's quest was to get the last ember from the fire that originally forged the sword. With that, they could make Excalibur whole again. Unfortunately, to do so meant that Emma had to summon Nimue because she was the one who had the ember. Nimue tried to persuade Emma to kill Merlin so that she wouldn't go back to being worthless. Emma said, "I am not nothing! I was never nothing! The power you have I don't need!" I am so proud of her. She acquired the ember and Nimue vanished.
Meanwhile, Hook, Charming, Snow, Regina, Robin, and Zelena went to go get Excalibur from Arthur. However, Arthur is now a pretty bad guy. He said to Guinevere, and I quote, "This is war now." Surprisingly, Zelena showed the gang how to get into the castle secretly, and Snow guarded her while everyone else searched for the sword. Zelena tricked Snow and escaped. She teamed up with Arthur and had her magic back. She helped Arthur tether Merlin's soul to Excalibur, so Arthur summoned him and ordered him to make the others go away.
In present time (Storybrooke), Emma used the ember to reunite Excalibur and the dagger. Once she did, she had a memory of Merlin telling her not to take it (we saw this in the beginning of the first episode), but she did anyway. So that's interesting.
Tonight is a 2-episode special so be sure to watch it!! The spoilers are literally eating at my soul. Once Upon a Time is on at 8 PM on ABC!
--@onceuponatimeinhogwarts