Robin and Clyde Rawlins were able to chase off the gang. They headed back to their master, Sir Edmond Dorrance and told their tale. He ordered his Ghost Dragons to kill them both.
Henri Ducard was hired to kill Dorrance, aka the King Snake.
The next morning, Rawlins woke up in a hotel room with Tim watching over him. He told the boy he was DEA and working undercover. Shiva appeared and got them to safety before the Ghost Dragons arrived and shot up their room.
After their latest failure, Dorrance promoted Lynx (the girl Robin tried to save) to the leader of the gang.
Rawlins came clean to Robin - the Ghost Dragons had killed his wife and kids, but always got off due to Dorrance's diplomatic immunity. Shiva watched the two spar outside a farmhouse Robin had rented.

Shiva introduced herself and mentioned meeting Batman and him being the "latest little Robin." Shiva had Robin search for a WWII Nazi lab. He found it nearby in France. They found it; Shiva disappeared. Robin and Clyde went in and someone opened fire on them. Robin was captured and taken to Lynx, but as soon as she got him, bats (awakened by the gunfire and explosions) swarmed. Robin and Clyde escaped, but the Ghost Dragons' plague weapon was moved and en route for delivery. Shiva kept them from taking one of the two containers.
Lynx reported back to Dorrance that they'd secured one of the containers and that the boy and Rawlins would no longer haunt them.
Robin found out what they had - black death: the Bubonic Plague.

Robin and his group set up shop in Hong Kong. They shook down some Ghost Dragons and were told the location of King Snake's secret landing strip.
Dorrance was displeased with Lynx when he learned the DEA agent and the boy were still alive. He'd also learned the boy was the Batman's partner.
As they waited and prepared, Shiva taught Robin. He picked a collapsible bowstaff as a weapon; she belittled him for his non-lethal choice.
Dorrance discussed his plan - his people had built Hong Kong, and he did not want the Chinese taking it over. He'd rather destroy it.
Robin got schematics of Dorrance's tower, while unknown to them, Henri Ducard also staked it out. Ducard was spotted and picked up by Dorrance's security. They opened fire on him, but he took them both down and crashed their cruiser into the bay.
Robin's next workout with Shiva was much better - he carved a notch into his bowstaff so it would whistle. The sound took her by surprise and he got a few good connections with it.

Clyde didn't care for the waiting game and went in for Dorrance without Shiva and Robin. Shiva explained to Robin that he died with his family anyway. He got to Dorrance as Robin got to the plague weapon. Once it was disabled, he headed upstairs. Rawlins was dead; King Snake knew he was in the room. Robin was able to use his whistling staff to catch Dorrance off-guard. He kicked him through a window. Dorrance held on for his life as Shiva ordered Robin to deliver the killing blow. He refused and collected Clyde's body, leaving Dorrance to Shiva.
On his way out, Robin bumped into Ducard. The bounty hunter told him that one of Dorrance's ships was on its way to Gotham City. Back home, Robin attacked the ship and scattered Dorrance's wealth across the harbor. He handled a few Ghost Dragons, including Lynx, who was missing an eye due to her last failure with King Snake.
Batman watched his new partner emerge victorious from the harbor incident. The two swung away together.