It's an ordinary evening at a tuition center when the world goes silent. Everyone has vanished, and only one small group is left in each city. In Surat, that's a handful of students, three teachers, and one new joinee who is already stronger than anyone in the room. A note falls onto Harshal's lap with a single word: Birdy.

Cut off from the world, with no modern weapons and a barrier that seals the city for five years, they find that each of them has been given a martial art and a power. They also learn that every other city has a group just like them. As the first fight shows how far people will go to survive, Harshal has to decide what he's willing to fight for, and what kind of leader he'll be to the friends who followed him in.