
A soldier faces a zombie outbreak during military service. His girlfriend, an engineer, navigates zombie-ridden Seoul. Both fight through the undead-infested city, striving to reunite amid the chaos.

Brilliant brain scientist Sewon (Lee Sun-Kyun) suffers a horrific personal tragedy. Desperate to uncover what happened to his family, he conducts "brain syncs" with the dead to access their memories for clues.