Is it just us, or does Once Upon a Time Season 3 just keeping getting better and better? With the introduction of Ariel and her world-hopping abilities, the stakes are higher than ever headed into Season 3, Episode 7: "Dark Hollow."

What can we expect now that Storybrooke is back in the mix? The promo for the episode provides some clues, so we've taken a close look to see what it reveals.

Ariel in Storybrooke. The show continues its rapid fire pace, with Ariel appearing in Storybrooke next week. At :31 we see her explain that she was sent by Rumple to help.

Ariel's legs work! In case you thought Regina was tricking the little mermaid again — though with Henry's life on the line, we assumed sincerity — throughout the promo we see her walking around on her own two legs, with no apparent negative consequences. It appears the bracelet was legit this time.

More magic in Storybrooke? At :10 we see a stream of magic shooting up out of a manhole in Storybrooke, and then encompass the town. At :17 we see the dwarves mining, and then a streak of light shoot out of the rocks, which we assume is the same light.

Belle's plan. Unsurprisingly, Belle is all about listening to Rumple's message, explaining at :12 that the townsfolk need to "save him, Henry, everyone." It sounds like she has a mission, and we're guessing it's linked to the magic mentioned above.

The fate of Neverland. According to the voiceover, "the fate over Neverland is in their hands." The "their" in that sentence presumably being the townsfolk back in Storybrooke. But what, exactly, is the plan?

They MUST succeed. Whatever it is, Belle is sure they need to succeed, or "people [they] really care about will die."

A gun! Belle and Ariel run into trouble, as we see at :18, when someone holds a gun up to them. Who is it? Based on the hand and coat that we can see, it looks like it's probably a man. Could King George be back to wreak havoc? Or maybe another of Pan's minions in our world?

Shadows, shadows everywhere. At :21, we see Emma holding her sword up in a red-tinted landscape, with evil shadow flying everywhere. That seems bad, to put it lightly.

Watch the preview for yourself below and sound off with your thoughts in the comments!

Read more OUAT spoilers here.

Catch the next episode of Once Upon a Time on Sunday, November 11 at 8 p.m. ET/PT on ABC.

Rebecca Martin is an Associate Editor at Wetpaint Entertainment and our resident Game of Thrones, Breaking Bad, and genre TV expert. Follow her on Twitter and Google+!