Once Upon a Time Season 2 heads into the home stretch with Season 2, Episode 21: "Second Star to the Right" (May 5), the penultimate episode of the season, and the first episode of the two-part finale. As the title suggests, this week will (probably) take us to Neverland — at least in the flashback! What else can you expect? We've gathered the juiciest spoilers about the episode here.

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Neal's past. As the official synopsis explains, in this episode "young Bae finds himself back in 19th century London and is taken in by the Darling family — befriending their daughter Wendy." We see that in the first 10 minutes of the episode (which you can watch). We also know that Neal and Hook's mysterious backstory will be revealed in this episode.

What about Peter Pan? Will we meet Peter Pan this week? The answer remains unclear. But either way, when we do meet Peter (which may or may not be this season), we should expect the OUAT take on the character to be different than what we've seen before. According the the showrunners, he's “probably not the lovely, cuddly shadow we remember.”

Regina's dire situation. As this sneak peek reveals, Greg, who captured Regina at the end of Episode 20, has very, very cruel plans for her. (Speaking of Greg, expect to see his dad.)

Who will rescue Regina? The official synopsis explains, "Emma, Mary Margaret, and David go in search of Regina when they discover that she — along with some magic beans — have gone missing. But against Neal’s protests, Emma still believes that Tamara had something to do with Regina’s disappearance."  

In this sneak peek we learn that the Charmings and Emma want to save Regina, and go to Gold for help finding her. However, Rumple's magic comes with an interesting price: "this particular spell will connect Regina and Snow in a very dangerous way." Is that what "unites" them?

Neal and Emma have a heart-to-heart. Check out this sneak peek.

Rumple, Lacey, and Neal. In the first 10 minutes of the episode linked above, we see that Neal comes upon his dad acting out in the worst way to impress Lacey. Neal is not happy, understandably. Is that the "game changer" for the Rumple-Nealfire relationship that's supposed to happen this week, or is that later in the episode?

Meanwhile, the official synopsis also hints that "Mr. Gold contemplates telling Lacey the truth about his ability to conjure magic." Hmm...

For more spoilers about the two-part finale, some of which might apply to this week, check out our finale spoiler roundup.

Are you excited for this episode? Sound off in the comments below!

Read more OUAT spoilers here.

Catch the episode on Sunday, May 5 at 8 p.m. ET/PT on ABC.

Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaDMartin.