In Storybrooke, David and Mary Margaret prepare to announce the name of their son as Zelena's time portal is opened. When Zelena died her pendant's magic had no tether and opened  the portal. 

As Emma and Hook argue about her going to New York, they are both trapped by the portal and end up in the Enchanted Forest of the past where they interrupt Charming and Snow's first meeting. 

Hook and Emma find Rumpelstiltskin to get help in setting the timeline right again but things go awry when Snow tries to steal Charming's mothers ring but drops it. Disguised as a princess, Emma tries to save Snow's life, she's taken into custody by Regina and her men.