Diana answers a job posting from Ahvie the Rhack, a blue-furred mouse-like mechanic who needs a co-pilot for a backwater scrap race. Their vehicle is a rust-bucket with open cockpit, no weapons, and engines that refuse to spark at the start line. While every other racer takes off, Diana stays dead in the water. Her solution: jump out of the cockpit, run to the rear of the ship while hanging onto the fuselage, fire her handgun into the escaping reaction gas, and detonate the fuel to jumpstart the engine. The ship rockets ahead out of control, and she has to climb back into her seat mid-flight while screaming that she is passionate, not insane. This scene establishes her core method: when a system fails, break it harder.

After the Overflow Cup, Diana ends up on Waitless Station preparing for the Tyrant Cracker, a point-based hit-and-run race that turns out to be a Federation pretext for invasion. She makes a bet with a competitive Polerin racer named Abatrath: if she beats him in an impromptu zero-gravity street race through the station corridors, he will give her all his intel on the Tyrant Cracker. He has a thruster pack; she has only her suit jets. Mid-race, she realizes she cannot out-accelerate him, so she grabs a station security scooter with one boot, then steals a second scooter from an officer who tries to stun her. She rides both at once, using the opposing pulls to slingshot herself ahead. It looks like she will be torn in half. Instead, she dislocates her own arm to slip through closing bulkhead doors and wins. Abatrath, watching from behind, calls her insane but also places a bet on her.

The Tyrant Cracker finale reveals the Federation's true plan: they have launched stealth-coated asteroids toward the planet as kinetic kill vehicles. Diana, now piloting the Cerberus, decides she is not going to let innocents die for a race. She breaks formation from the other racers, flies her corvette directly into the heart of the Federation fleet, drops an EMP bomb, and rams her ship through the hangar doors of a cruiser. The impact cripples her vessel. She crawls out of the wreckage wearing a spacesuit, shoots three marines with a handgun, takes the tertiary bridge by tossing concussion grenades, and physically jacks ChaOS into the ship's computer via a universal plug in her vambrace. Then she broadcasts a fleet-wide declaration of capture using loopholes in Federation wartime protocol, turns the cruiser's guns on the flagship, and escapes in a smaller fighter printed inside the hangar from the wreckage.

With the cruiser under her control, Diana fires torpedoes at allied ships, cripples the flagship's engines, and creates enough chaos for the Bolgian fleet to close the gap. The Federation fleet is forced to retreat with heavy losses. Diana escapes in the Styx, a tiny fighter assembled by nanites inside the ruined hangar. She has no idea if she will be disqualified for destroying non-Bolgian ships, but she does not care. Afterward, she meets Abatrath for a meal, invites Zil Rossi to join her team, and is flagged by Federation Logistics Admiral Naime Naime as a high-priority anomalous threat. The epilogue shows the Admiral reading the debrief, cawing in displeasure, and noting that Diana is a pink-skinned bipedal alien who barks her teeth at cameras. The race is over, but Diana has made enemies at the highest level of the Federation.