You'll want to watch Once Upon a Time Season 4 Episode 2 online to find out how Hook and David work together to save Emma when she finds herself trapped in an ice wall erected by Elsa to keep the residents of Storybrooke inside until she finds her sister. But while trapped, Elsa and Emma realize how much they have in common as they both have powers they don't understand and can't quite control. Even Elsa isn't sure she can take down the icy walls she's built around them.

Back in Storybrooke when the power goes out the residents run to Mary Margaret to fix it. Despite being a sleep deprived new mom, she heads to the power plant to check it out and tells the whiny residents of Storybrooke that she may now understand why Regina turned evil.

Several years on the past when David was still a shepherd it turns out that he met Anna who was searching for answers to her sister's magic. She showed David why it was more important to risk fighting to live his life than to simply survive. Watch Once Upon a Time Season 4 Episode 2 online here at TV Fanatic.