In the ashen town veiled in darkness, sin grows like wild grass. Irene and Hawk, who relied on each other for survival in the orphanage since childhood, carry the deep-seated hatred of their parents' unjust deaths and embark on a thorny path in pursuit of justice. From the mysterious murder cases related to the rusty butterfly to uncovering the earth - shattering conspiracy between the powerful and the corrupt police, they have endured life - and - death tests. After establishing a civilian organization, they continuously encounter new challenges: oppression from factory owners, attacks by mysterious criminal organizations, internal disagreements...
