Emma and Regina devise a plan to free Merlin, but they lack a pivotal ingredient. Meanwhile, Mary Margaret and David seek an important dagger; Henry asks Violet to go on a date; and Merida attempts to carry out a covert mission Emma has assigned her.—Stanny
In Camelot, as Mary Margaret and David attempt to retrieve the Dark One dagger, Emma uses a dreamcatcher to look into the past to see how Merlin was transformed into a tree. Together, Emma and Regina figure out the critical ingredient they must acquire to free Merlin, but it's a race against Arthur, who does not want Merlin released.