After leaving Oscar Trey for dead on Outpost 23, Rosemary Deathly heads to her base of operations for her next assignment. She is ordered to retrieve the evidence Max Van Citra hid somewhere on Mars.

Detective Kelvin Moby, hot on Rosemary's trail, follows her to her hideout, where they decide to join forces to fight their common enemy. Together they discover the evidence against Sydney Van Citra isn't on Mars itself, but on the orbiting space station, Mireside, an ancient, dangerous station with an AI that is less than stable.

Arriving during Mireside's famous Halloween festival, Rosemary goes to work retrieving the evidence while a smuggling ring sidetracks Moby. Things go wrong when pirates attack an enemy ship, hitting Mireside instead, damaging the reactor.

Will they make it out alive, saving the evidence and the contraband from the smugglers?