Batman and Damian return to Gotham City where the Dark Knight introduces his son to the Batcave, Alfred, and his adopted son, Tim. Damian is immediately hostile towards Tim, as he believes he alone is truly Batman's son and rightful heir. His petulant attitude gets him locked up in one of Wayne Manor's many rooms, but he easily escapes. Later, Tim is searching for Alfred (who has been locked in a room by Damian) in the Batcave when he comes across Damian, armed with a sword that Batman had taken from him. Suspicious, Tim tries to befriend Damian when the younger child reveals that he went out and beheaded a criminal known as the Spook, and placed a grenade in his mouth. Shocked, Tim yells at Damian that killing is not their way. Damian responds by tossing the head in the air, which explodes when it hits the ground. The two spar until Tim helps Damian off the snapping "Tyrannosaurus rex" jaws. Damian then punches out Tim and takes Jason Todd's displayed Robin costume with him. Later, the Bat-Signal is lit and Batman finds Damian wearing the costume. Batman asks how he got out of the Batcave without being seen and then asks what he has done with Tim.