Venus and the ghouls work feverishly to help save the oldest living tree at Monster High.
Venus rushes across school to request various objects from her friends: bandages from Cleo, distilled water from Lagoona, and a thermometer from Abbey and Frankie. Curious, the four girls follow Venus to discover she needs the items to nurse a sick tree. And not just any tree, but the oldest, still-living tree at Monster High. Venus confides that something is wrong with his roots, but she doesn't know how to help him. Frankie suggests they ask around for someone who does know how to help a dying tree, which reminds Venus of Mother Nature.
The group, sans Cleo, go to a quiet pond in the middle of a forest so Venus can communicate with Mother Nature. The old entity imparts that Venus and her friends are to recall their good memories of the tree and love it back to life. The girls immediately call Cleo and get her to gather the entire student body around the tree.
The students are initially skeptical about their need to be there for the tree, until Venus reminds them that the tree symbolizes their history. Spectra remembers the great stories she wrote under the tree, Manny notes he lost five soccer balls to the tree's branches, Ghoulia thinks back on all the times she studied under the tree, and Draculaura and Clawd recall how the tree was part of their first date. As the students share their individual experiences with the tree, his roots plunge back into the soil and leaves sprout from his branches. With no doubt that the tree has been revitalized, the students celebrate.
- The title "Tree of Unlife" is a pun on the concept of the tree of life, a common motif in various world theologies, mythologies, and philosophies.
- Cleo's bandages are of the Ghostier brand. Most likely it is of Jean Maul Ghostier, who was mentioned in "Nefera Again", and not of Moanatella Ghostier from "Scaris: City of Frights".