The heroes set out to stop Hyde; Emma experiences a mysterious side effect; refugees from the Land of Untold Stories come to Storybrooke; Regina and Zelena become roommates; Rumple enlists a stranger to help free Belle from the sleeping curse.
When a serial killer "Over There" starts piling up victims, the Fringe Division gets involved with the investigation.
The Evil Queen and Hyde work to steal Dr. Jekyll's serum; Snow looks forward to returning to teaching; when Emma anticipates that Hook will be moving in, he works to protect Belle from Mr. Gold.
In a flashback, Aladdin helps Princess Jasmine recover a secret weapon that could release Jafar's hold on the Sultan and save the city; in Storybrooke, the evil queen tricks Hook and tries to divide the family.