"Cold Case" is an animated mystery short film developed in Unreal Engine 5 over an eight-week sprint. Set at a desolate gas station in Upper Nyack, the narrative follows a lone driver whose mundane search for a snack devolves into a surreal mystery when the store's cold storage claims him. Working within a three-person team, I shaped the film's tense atmosphere by taking on environment modeling, lighting, cinematography, sound design, and final editing, while collaborating closely with character animation and FX specialists who were vital to bringing the vision to life.