Plot summary
While Greg performs meaningless tasks for the Beast, Beatrice finds Wirt. As Greg transforms into an Edelwood tree, the Beast attempts to persuade the woodsman to use Greg as fuel for his lantern. When Wirt and Beatrice arrive, they try to free Greg from the tree; Wirt names Greg's frog "Jason Funderburker". The Beast offers to preserve Greg's soul in the lantern, if Wirt takes over the responsibility of keeping the lantern lit. Wirt is tempted to accept this offer, but realizes that it is actually the Beast's soul that is in the lantern.
Wirt frees Greg from the branches, gives Beatrice Adelaide's scissors, and finally gives the Woodsman the lantern. As Wirt and Greg leave, the Woodsman extinguishes the lantern. Wirt wakes up in the lake, back home, and pulls Greg and his frog to the surface. The brothers are taken to the hospital. Wirt wakes up surrounded by Greg, Sara, and her friends, and invites Sara to listen to the tape at his house together. The frog's stomach glows with Lorna's bell still inside. Back in the Unknown, the Woodsman finds his daughter alive, and Beatrice and her family have been restored to human form.
Credits
Adapted from Wikipedia contributors, Over the Garden Wall. Exact series, overall episode number and English title matched. Reference markers and illustrations removed; paragraph formatting adjusted.