Short version: a plan to trap Ingrid in the urn goes horribly awry because of course it does.
Long version: Ingrid isn't happy that her family is falling to pieces--oh, mirror pun! This is the biggest reason why this episode did not need to be two hours. This entire flashback could have easily been done in one, but they felt the need to drag it out as long as possible by making everyone speak in really clunky dialogue. Most of the two hours was just explanation and exposition: "this is a plan that we have come up with after we learned this information about this other member of our family! We will now explain it to the audience who are too stupid to comprehend sense and logic!" I don't need five minutes of Elsa and Anna discussing their plan for Ingrid; it's pretty obvious that they are going to trick her into the urn. And it doesn't help that most of this conversation is also just an excuse for Anna to say "funny" (notice the quotes) things. The writers knew they needed to flesh out two hours worth of TV so they put in as much filler as possible. Of course this plan is going to go horribly wrong. Of course Elsa is going to end up in the urn by the end of all this. Of course Ingrid will having something to do with it. Of course Hans is frozen in a wardrobe. Wait, what? Why? Why is Hans in a wardrobe? Oh! I know why! It's so Anna could say, "he's...FROZEN." Get it? FROZEN. He's FROZEN, guys. Like the movie. You know, the movie that made billions of dollars and is now singlehandedly responsible for saving ONCE's ass? Yeah that one. Whatever.
Short version: Emma's plan to get rid of her magic goes horrible wrong because of course it does! And Rumple is a monster.
Long version: Emma's magic is still fritzy and everyone in town is super worried--except for Regina who wants to have more sex with Robin the crypt where her father is buried. Fuck this show. I'm sorry. I normally don't openly curse like that on this blog, but I needed to. I will, henceforth, be ignoring all OutlawQueen nonsense until someone smacks some sense (and morals) into Adam and Eddy. Emma accidentally hurt Henry which causes her to want to get rid of her powers for good; thus, she goes to the only person who can probably help her: Rumple. Well, isn't that jolly and super convenient? Luckily, Rumple has just the thing that will make Miss Swan's magic go poof like so many hopes and dreams I once had about this little show. He's gonna suck her into that hat! But, because this episode is 2 hours long, we have to drag it out with a lot of silliness. The Charmings need a pep talk from Regina (are you kidding me) because they've decided to give up on Emma and not to do the right thing by going after her and stopping her plan to get rid of her magic or at least TALK to her. Robin and Will Scarlett need to spend time in the public library making wisecracks about Cats in Hats (dear lord if the season 5 villain is the Cat in the Hat...) and we all have to act like the tiny little scratch on Henry's neck from Emma's power backfire is a life or death situation that could result in Henry bleeding to death at any moment! Lord. Give me strength. Oh, and there is some nonsense about Hook and Rumple and Hook's (too perfectly red) heart.
--Seriously, why was this episode two hours long?
--"I have his hat." Such good dialogue.
--Emma suddenly hates Happy the Dwarf! If you're familiar with ONCE fandom then you know that this might be a reference to the hell that went down between actors Jennifer Morrison and Michael Coleman (Happy) when the latter said something about SwanQueen. ONCE writers: always professional.
--Is Will an alcoholic?
--And Anna didn't just close her eyes when the shards of glass were flying towards her slowly because...?
--"I undid all the good. Neal is still gone; the town is still in danger; and Belle knows who I am, and that's a man who always chooses power." Sigh. I miss the Rumple I would have defended unto death.
--You have no idea how badly I was hoping that Rumple would crush the Pirate's heart.
--Sex in a crypt. Ladies and gentlemen: Once Upon A Time