Nightwing, Vol. 2 #138A

The Resurrection of Ra's al Ghul - Part 2: the Lesser of Two Evils
Fleeing his grandfather's designs, Damian Wayne has lead the League of Assassins straight back to his father's home, seeking Batman's aid. However, he wasn't aware that Batman isn't home at the moment, leaving he and Robin to face an almost insurmountable army of ninjas. Fortunately with the use of a Justice League teleporter, Nightwing isn't too far away to help. But when Tiger Moth, the Silken Spider and Dragonfly turn up at Wayne Manor, tracking Damian it becomes clear that there's still another player in these events.
Release Date: 2007