Sweet Tooth Ending Explained: The Creators Break Down the Ambiguous Finale (Exclusive)
The Origin of the Sick
In the final season of Sweet Tooth, Gus, Wendy, Becky, and Big Man travel to Alaska to find Gus' mom.
They discover the origin of the Sick virus from Captain Thacker's expedition. He found a mysterious tree with the blood of the Earth, leading to the birth of the first hybrid after an experiment went wrong. Gus meets Munaq, the first hybrid, who explains that hybrids are the cure for humanity's survival.
The Cave Confrontation
The story reaches a critical point in a cave. Dr. Singh, previously working against the hybrids, decides to help Gus after Zhang kills Birdie and stabs Big Man. Zhang accidentally releases the Sick virus again. Gus has a vision where he sees a way to heal everyone. He decides to burn the magical tree, which heals the Sick but implies that humans' dominance on Earth is coming to an end. This act of sacrifice shows Gus' growth and heroism.