Day 3 is a short, horror film that follows Samantha Low, a down-and-out 21-year-old folksinger, as she navigates her first year as a tree-planter. She finds meaningful challenges in the work, a sense of belonging in camp, and inspiration for her music in the surrounding nature. But on the last day of the contract, when the truck gets stuck, her crew finds themselves in the grip of a terrible realization: the land is bringing something out of them. Something haunts them... hunts them.