Who will win this epic battle, and how will it play out? We've taken a close look at the episode's promo to see what it reveals.
1. "Henry saves magic." Peter Pan isn't wasting any time now that Henry has agreed to try to save magic. "Tonight, Henry saves magic!" he declares to a happy crowd of Lost Boys at the beginning of the promo.
2. "It's time." Meanwhile, at :07, Emma declares, "It's time, let's get Henry." We see the group march off, ready for war.
3. Regina and Rumple are back. And by “the group,” we mean the whole group. At :06 the main gang raise their weapons, only to see Regina and Rumple emerge from the woods.
4. Even Rumple is in on the action. At :11 Rumple "borrows" Hook's sword, though whether he plans to fight with it or use it for a more magical purpose is yet to be determined.
5. Magic! At :14, Regina tells Emma, "I need help." "With...magic?" Emma replies. You betcha! "Follow my lead," Regina says, and at :18 we see them both raise their arms towards the moon.
6. A lot of magic. At :19, we see that the entire island hit by a spell, and Emma goes flying backwards. How epic! Is this Emma and Regina's magic at work, or perhaps the consequence of whatever Peter is having Henry do?
7. Henry hits Peter. At :20 we see Henry, hand glowing, hit Peter in the chest. Is that part of saving magic, or is this Henry deciding to take his fate into his own hands?
8. Emma screaming. Emma looks very upset at :21. Does someone she cares about (Henry? One of her parents?) get hurt?
9. Pan rising. Also at :21, Pan rises up into the air in a cave (it looks like the same one Emma and Regina were performing a spell in, but we could be wrong about that). A flying Peter can't be good.
10. The stakes: At the end of the preview we learn through Wendy that apparently the end goal here is that "Peter Pan will be immortal." That's bad enough. Even worse? "And Henry will die."
Watch the preview for yourself below and sound off with your thoughts in the comments!