http://officerparker.tumblr.com/post/28078696401
Perhaps this blog will help shed light on things. It makes sense that episode 1 was actually episode 2 and vice versa based on the other spoilers that have been given, and the films that we’ve seen being shot.
So
Episode 1 = Sleeping Beauty. It looks like Regina sends Emma and Snow White off somewhere else, or they get sucked into a vortex by the end of the episode explaining their absence in episode 2.
Episode 2 = Henry trying to find out if Regina is behind Emma’s and Snow White’s disappearance, and getting caught sneaking into her house. Prince Charming being very protective of Henry and finding Jefferson. The town looking in the forest for them.
Episode 3 = Well, we know Lancelot is in this one for sure.
Episode 4 = Captain Hook, Beaman, Milha all appear.