The women on Moya head down to a trading station on a derelict Leviathan to buy a sensor distorter for Moya. While it's being customised, they have four arns to kill.

Wandering through the station, Aeryn and Sikozu are shocked to see Grayza and Braca, with a squad of Peacekeeper commandos. As they hide, another ship arrives - carrying a Scarran delegation.

They follow the two groups to a clandestine meeting, at which it becomes clear that Grayza is prepared to strike a deal with the Scarrans in return for peace - and her own advancement. The price is the handing over of the Luxan territories to the Scarrans. As Grayza signs a treaty, Aeryn prepares to assassinate her. Before she can, the Scarrans turns on the Peacekeepers, killing the commandos and taking Grayza and Braca prisoner.

Meanwhile, Noranti and Chiana have hidden themselves from the Peacekeepers by having full genetic modifications - changing their species and DNA. They meet up with Aeryn and Sikozu, who are attempting to reach Grayza to kill her. If they do not, the Scarrans will learn that the Peacekeepers don�t control wormhole technology from her - the only thing preventing them from an all-out attack.

Chiana returns to the transport pod, and the rest of the group defeat the guards around Grayza. They are forced to rescue her and Braca by Graza's threats of a patrolling Peacekeeper Command Carrier. Aeryn holds off the Scarrans while the others escape. On the way to the pod, Grayza tricks Sikozu, and she and Braca make a break for it.

Aeryn returns to the pod in the nick of time, and the four women return to Moya. Pilot immediately starbursts as a Scarran Dreadnaught is in pursuit, but they travel only a short distance and the Dreadnaught remains on their tail. The ship and the girls are checked for a homing beacon.

John and Aeryn decide to leave together so that the others are safe, but when John asks if the baby will be all right, Aeryn doesn't understand. John realises she is the beacon, and shoots her, to reveal a bionoid replica.

The sensor distorter is installed and fools the Dreadnaught. Moya's crew realise that the Grayza that escaped was also a replica, and the real one is in Scarran custody. D'Argo assures John that they will search for Aeryn, and find her.