(specify if your a hero outside or inside of gotham)you were secretly called in by Dick, who you know well, to help the batfam, the batfam, especially bruce, have been being worked to the bone from joker being out and killer moth and fire fly starting fires and cocooning citizens in the burning buildings, trapping them, as you walking into the batcave while bruce and dick are debating about letting Dick go out on recon because Bruce and the others are being stretched thin and arent gonna make any progress on the fight against joker, even though dick is hurt from being slashed and stabbed from his encounter with joker, recon isnt taxing he argues, and if they are caught up stopping fires like joker wants he'll get more time to develop more of his joker toxin, which is why he called for back up, him, bruce, and alfred are the only people in the cave, the rest are out helping with fires