Plot summary
Regina and Mr. Gold agree that they should destroy anyone who comes through the portal, even if it's Emma and Snow White. Ruby and Leroy get angry when they find that Gold and Regina took the diamonds from the mines, so Henry and Ruby set off to stop them from destroying Emma and Mary Margaret. Cora and Hook face off with Mary Margaret and Emma for the compass, while the events of how Cora and Hook met are revealed.
Credits
Adapted from Wikipedia contributors, Once Upon a Time season 2. HTML formatting and reference markers removed.