Summary: Prologue: The Husnock race is immolated in an instant by a Douwd, a being of pure energy. The last words they here are "for Rishon", and they see the image of an alien female they executed during the conquering of Delta Rana IV.
20 years later: Dr. Theron leads a Federation team of xenoarchaeologists studying the Husnock planet. Elsewhere, a crew of Pakleds finds an abandoned space station filled with weapons.
Titan's XO Sarai checks in covertly with Admiral Marta Batanides, director of Starfleet Intelligence, advising her on Riker and Vale's commanding; Batanides has an obsessive vendetta against Raiker and Titan's senior officers, and Sarai is SI's mole.
Brunt, no longer a Ferengi Commerce Authority liquidator, now makes his money as a bounty hunter. Gaila, a former partner that Brunt turned in to authorities, has broken out of prison and Brunt believes he will find him in an uncharted system.
Dr. Theron and his Vulcan assistant Kilaris are presenting their findings on a Husnock Rosetta stone when they are ambushed. Kilaris and a few others are taken, and the rest are killed.
A ship run by an Orion named Nilat observes the mercenary's attack and follows them surreptitiously.
Riker tells Vale that Titan and 3 other ships are being dispatched to the planet he dubs Rishon, fearing that the scientists were abducted because they know where to find the Husnock weapons cache.
Kilaris and her lot are thrown in the brig. Their captors are Nausicaans who want the weapons to restore their race's pride. They're taken to an irradiated moon of a gas giant.
Titan's away team determines the attackers were Nausicaans, and Riker commands Titan and 2 of the other ships to pursue the residual warp trail. The bounty hunters tracking the Nausicaans release distress beacons to divert one of Riker's ships from the gas giant.
A Ferengi named Gaila and his hired mercs oust the Pakleds from the Husnock warehouse. The tortured Pakleds flee and the captain vows to get revenge.
Kilaris et al. eventually arrive at a crashed Husnock ship. The Nausicaans tell them they have 1 hour to crack the command codes. Titan scans the planet and also sees the ship. Riker and Sarai lead an away team. Vale gets word from the Wasp that the distress calls were just Orion syndicate beacons, but when they destroyed them, they started being followed by what they think is a cloaked ship.
Titan's away team almost gets the drop on the Nausicaans inside the Husnock ship, but when they run into Brunt, the Nausicaans overhear and a firefight ensues. Slokar tells Riker they just want to make Nausicaans great again, and that he'll let the prisoners go if Riker lets them leave; otherwise, he's going to blow up the ship.
The scientists manage to hack the Husnock ship; Brunt storms in, guns blazing, sand the Nausicaans retreat--but not after leaving a time bomb. The away team grabs the hostages and flees the ship, and Brunt hands Riker a bill on the way out. The Nausicaans make it back to their ship, but members of the Orion Syndicate are waiting; they kill the Nausicaans and take the Husnock data chip.
Back on Titan, the recovered Tellarite scientist says he put a virus on the data chip that will let them track the Orions. Troi tells Sarai that she's not working with the crew enough. Xin and Pazlar get into a heated argument, ending with Melora slapping him.
The Ferengi Gaila has his hacker working on the Husnock system. Brunt surreptitiously sends Titan the coordinates of the cloaked Orion vessel, and how to detect it while cloaked, which they use to track the Silago-Ekon.
The Orions find the virus on the datachip and store it away for later. They also notice the Starfleet and Ferengi ships tracking them and decide to run for the Hussnock planet they found in the Naussican logs. The Denobulan engineer Proat contacts someone privately, much the same way Sarai does, to tell them to start phase 4.
The Orion Syndicate ship arrives at the abandoned Husnock vessel before they're caught up, but Proat takes over the ship, killing the entire crew. A Breen ship decloaks nearby; Spetzkar Proat (Breen military elite special forces) was a mole for Thot Tren. With Titan en route, 2 other Breen ships decloak.
After a bit of sabre rattling, the Breen aboard the Husnock ship fire it's phasers, which completely knock out Titan's shields and most primary systems. Titan's sister ships retaliate; the Husnock vessel auto-launches a trilithium missile into the sun and destroys it. Ra-Havreii is exposed to massive doses of radiation making repairs to the warp core, but Titan gets it's warp drive back online seconds before they would have been destroyed in the blast wave.
The Breen ships arrive at a Husnock shipyard housing over 280 warships. The Breen appear to be able to use Tholian thoughtwave technology to pilot all the ships at once. Vale leads Titan and its 2 sister ships into a seemingly hopeless battle, but the Breen find that the Husnock ships only have beam weapons and no munitions. Thot Tren deems it dishonorable to fight such a lopsided battle against a weaker foe, and decides to take the fleet to a nearby Husnock munitions factory so he can load up one of the warships instead.
Vastly outgunned, Pazlar comes up with an idea to disrupt the frequency the Breen are using to control the ships while they negotiate with Gaila. After a brief show of force, which wiped out 40 of the Husnock ships, Gaila presents his asking price and Tren says he'll have to take it to the Breen government for approval--while trying to find a way to take Gaila out. Just a they're about to run out of time, the Pakleds who previously occupied the station negotiate with the Breen for the backdoor security codes they installed before Gaila took over the station.
The Breen quickly take the station, and Gaila flees in his ship on a course towards Ferenginar, until he pieces together that the Pakleds had to have been the ones that sold him out. He and his one surviving crew member decide to wait for them in a nearby star system.
The Husnock fleet gets loaded with ordnance and comes for the Starfleet vessels. The Wasp and Canterbury are destroyed, and the Titan badly damaged. With nowhere to return and no way to fight, they risk a warp jump into the atmosphere of a nearby gas giant so they can hide and make repairs, which they narrowly pull off.
After making multitudinous repairs, Titan's crew decides to follow the sole Breen ship that broke off from the armada, after calculating that it seems to be headed towards the Husnock home planet. Their sensors are fried, so they transmit Pazlar's plan to disrupt the thoughtwave technology back to Starfleet. Thot Tren deploys an away team to the planet to break into the compound that has the override for the Husnock ships.
Vale sends a shuttle to the planet while the all the other shuttles are deployed and detonated with quantum torpedoes to distract the Breen ship. They still destroy the shuttle en route to Husnock Prime, but not before the away team evacuates in their eva suits. They her resistance from Spetzkar on the building's rooftop, but Modan hacks the Husnock cannons behind them and obliterates the troops.
Inside the bunker, they realize there's an auxiliary control station that the Breen don't know about, and head there. In orbit, Titan appears to be dead in the water, and just as the Kulak is about to deliver the killing blow, Tuvok blasts it from a Husnock defense platform that they hacked. Vale forces Tren to retreat, leaving the Spetzkar troops behind.
Sarai's team makes it to auxiliary control and are pinned down by ricocheting Spetzkar fire, but they managed to access the console. Knowing that Admiral Batanides will have her head if she doesn't follow her orders, she tells them to save 1 Husnock ship and detonate the rest. Backup arrives from Titan and the Spetzkar surrender.
Thot Tren tells his men they will be seen as heroes, having download schematics of Husnock technology. Their superiors need not ever know they controlled the Husnock fleet.
Gaila beams aboard the Pakled ship and says he's going to torture them until they hand over the money they got from selling him out to the Breen. Brunt--who had boarded the Pakled ship a few days ago--holds up Gaila and says he's taking him jail.
Sarai reports to Batanides, telling her that Riker and Vale did a commendable job in their respective duties. The admiral chides her for destroying most of the Husnock fleet, and when Sarai pushes back, Batanides says she's going to wind up at a Starfleet Intelligence black site if she doesn't watch herself, and that she'll give Riker and Vale her unredacted dossier. Vale and Riker are just off screen, and they tell Sarai they'll help her get out of this with her career in tact.
Review: 3 stars. I had high hopes for this one, but was a bit disappointed overall. It focused mostly on moving the plot forward instead of focusing on the Titan crew (apart from Sarai and Vale), which is what so much of the Titan series was about. Definitely not the sendoff I was hoping for.