Percy Jackson gets somehow into another world. Oliver Queen has to deal with his traumatic experiences. Oliver has his problems. Percy? Even more. Secrets are uncovered and villains are fought. And how comes the League of Assassins into play? Will contain spoilers of all Seasons until 6 of Arrow and PJO, HOO, TOA and MCGA

What if Felicity traded Roy's Life for Oliver and Immunity from the League of Assassins. After five years in the League of Assassins Roy Harper changed. He's a brutal killer, fearless. The perfect assassin. The heir to the Demon. And a new person is born. An Arsenal. Oliver sees him back in Star City. Will Oliver find out what Felicity and John did to Roy? Will Thea? Meanwhile, Team Arrow has to stop Roy from his hit. There is no humanity left in Roy Harper. Can't they bring back old Roy to the surface and survive? A shocking twist that will determine Roy's Fate!