When a swarm of giant bugs threatens to wipe out humanity
the world’s only defense is a group of humans with special abilities called Butterflies.
For Maehwa Baek, Butterflies are just heroic people he sees on TV until a tragic event brings him to the scientists that created them.
Soon, Maehwa must confront questions about himself that he has long avoided
why does he lose control at the sight of his own blood?
And what happened during the 13 years of his life that he can’t remember?