"The Undead" follows Jungkook, the captain of Alpha Squad, as he leads his team through a zombie apocalypse to rescue the daughter of his commander, Y/N. Amidst the chaos, Jungkook and Y/N's past romance is rekindled, driving them to confront the secrets of a government laboratory and the true cause of the outbreak. As they fight for survival and search for a cure, their love becomes their greatest strength amidst the darkness of the apocalypse.