Set after the end of 4a. Getting drunk and making wishes is not the best idea, as Emma and Regina are painfully reminded of when they find themselves without their magic in a realm similar to Enchanted Forest, yet still different. In order to return home they must track down their counterparts from this world and hope that one of them is not in full Evil Queen mode. Also on AO3.

Exhausting their options in trying to get Elsa home before Storybrooke reverts to ice age, Emma and Regina agree to do a magic binding as their final, worst case scenario, attempt. The only problem? Gold forgot to mention that the binding was also a marriage ceremony, and that now the two were stuck together for the time being.