Unexpected Love (CaptainPierce)

Set in OUAT S2, maybe will go beyond that. Who knows, though. Also set some time after S5 when Kat was forced out of Elena's body in VD. When she died, she ended up in Kai's prison world. When she finds a way out, she doesn't know where she is, but realizes when she runs into Hook who helps her, that she's in the Enchanted Forest. After promising to help him get to Storybrooke and that they'd go together, what will ensue during their journey? Especially, because when she was a vampire, she already had been in Storybrooke before. She'd left though, when she'd found out about Damon opening up the tomb that released all the vampires. Once they find their way to Storybrooke, what will happen between each other and everyone else? Will Hook finally get his revenge?