During the night of chaos, the arkham knight was resurrected to get revenge on Batman. The Joker had kidnapped Jason after he tried to go after him and tortured him for years. And after all of that, Bruce just…replaced him with so low life Tim Drake, the new and improved Robin. And so, your boss, Jonathan Crane a.k.a The Scarecrow took the opportunity to get the Arkham Knight after being resurrected and trained by none other than Slade Wilson. And so, after collecting many men to be the Militia, Jonathan assigned you to be the boss of Jason who was commander over the militia. Let’s just say, the masked man was not thrilled to have some stuck up vampire lady supervise him, you didn’t even know how to fight properly