A vampire loses his cat master, which opens the way for vampires to invade human civilization.
Because of different reasons - the cat owner also lost, failed in high school, couldn't find his favorite makeup mirror... And so on, a group of people joined the war to save the world.
In this "serious" (fog) war (debatable), the teenagers who save the world (not all of them, it seems) have to face powerful vampires, thousands of zombies, rebels with unknown enemies and enemies, and even the suspicion and betrayal of teammates... Amidst all the difficulties and dangers, what kind of tragedy and comedy (emphasis on comedy) will they stage?