20 Years After the Zombie Virus Outbreak Team leader Yuyeon and team member Ryung of the armed organization A/Z, responsible for maintaining order, are ambushed while investigating strange noises at a junkyard. "Sunbae... what do we do?" "I got bitten." Ryung is bitten by a strangely shaped zombie while protecting Yuyeon. Feeling his body change, he chooses to end his life... "Huh...?" But strangely, he doesn't die and remains mentally stable…! "It’s weird, but I get thirsty just looking at you, sunbae." "This can't be hunger." "Unless... it’s something more like sexual desire." Maybe this is even more dangerous...