In a city plagued by future disasters and extreme economic inequality, identifying humans with cybernetic enhancements proves daunting for Roy Revant's role as a rogue bounty hunter and bodyguard for hire. However, when a young girl with extraordinary strength rescues him from a perilous criminal, Roy discovers that unexpected support can come from the most unlikely places. Alongside a few allies, they embark on an epic battle to uncover the secrets of the powerful corporations that purport to benefit society. Meanwhile, Solty, a memory-less android on the run from the RUC Security Bureau, finds refuge in Roy's protective custody, eventually becoming his adoptive daughter after he is hired as Miranda's bodyguard.