Set right when the Pan curse happened. This time however Regina used her magic not just to give Emma and Henry false memories, but to give herself false memories as she was going to go with Emma and Henry.
In New York, Regina is Emma's fiancé and Henry is their son along with Jessica, there adopted 2 year old.
This is not a curse so it can't be broken by true love's kiss.
When Emma and Regina remember, they all go back to Storybrook.
Emma and Regina still love each other.
Regina and Emma want to keep the fairytale world a secret from their kids.
When they are back in Storybrook, everyone finds out that Emma and Regina are engaged.
Emma's parents don't take it to well saying that this is not what a princess does. (We all know Emma is more like a prince) Half the town is against there engagement.
Zelena slowly finds herself falling victim to Jessica's cuteness and playfulness. Zelena starts to feel like a real Aunt. This is before they remember who Zelena is.
Wile all the adults are off figuring out what is going on, Jessica discovers she has magic and uses it as a toddler would.
And is Rumple Regina's biological father?!