In Undead on Arrival, the characters are the beating heart of the horror, each bringing raw, authentic emotion to the relentless chaos that unfolds. Rookie EMT Casey, haunted by his insecurities and a desire to prove himself, clashes with his seasoned, world-weary partner Marcus, whose tough exterior hides deep personal scars. Together, they navigate a nightmarish journey that tests their endurance, courage, and trust in one another. Their vulnerabilities and strengths are pushed to the edge as they confront not only a reanimated horror in the back of their ambulance but also the trauma and regrets that threaten to tear them apart. The result is a gut-wrenching, character-driven thriller where survival is not only physical but deeply psychological.