you were close with the Bat, fought along side him a lot of the time.

well one night in Gotham, he had pissed you off to no return.

he had told you that you weren't strong enough to go off on your own. that you needed either him or Nightwing to go with you.

well you snapped at him. and grappled away.

now on your own you decide to split up one of the gang wars.

it obviously doesn't go well but you succeed.. but you were stabbed in the side.. pretty deep.

you staggered into an Alley and saw the outline of the Bat.