All of Us Are Dead: Season 2 picks up immediately after the heart-pounding finale of the first season, with the surviving students from Hyosan High School still reeling from the horror of the zombie outbreak. The teaser trailer gives fans a chilling glimpse of what’s to come, as the situation in Hyosan goes from bad to worse. The virus hasn’t been contained—it has evolved.
The season begins with Nam-ra (Cho Yi-hyun), the part-human, part-zombie hybrid, still in hiding and helping other survivors like her—halfbies who possess both the virus and the ability to retain some human control. Meanwhile, Cheong-san (Yoon Chan-young) makes a surprising return. Though presumed dead in Season 1, the teaser hints that he may have survived the explosion, possibly as another hybrid like Nam-ra. His return adds tension to the group as they struggle with trust issues and the fear of more betrayals.
The South Korean military, initially believed to have the outbreak under control, is shown scrambling as the virus spreads beyond Hyosan, threatening nearby cities. As the group of survivors ventures outside their ruined school, they discover horrifying new mutations of the zombies—faster, smarter, and deadlier. These new creatures can strategize, making survival even more difficult.
The government enforces extreme quarantine measures, but chaos reigns as more survivors face tough decisions about who to save and who to leave behind. Dae-su (Im Jae-hyuk) and Su-hyeok (Park Solomon) take on leadership roles, guiding the group through an apocalyptic landscape filled with both zombies and hostile human factions fighting for resources.
The central theme of Season 2 revolves around survival and the blurred lines between human and monster. As more survivors become infected and turn into hybrids, the group grapples with difficult choices about loyalty, humanity, and sacrifice. The final moments of the trailer tease a massive showdown between the hybrid survivors and the evolving zombie horde, with the fate of Hyosan and the world hanging in the balance.