Summary: A Dessev (an unknown species) named Kazren infiltrates the Utopia Planitia shipyards, steals plans for the slipstream drive, and escapes via a Romulan vessel using an undetectable phasing cloak. President Bacco authorizes Starfleet Intelligence to do anything necessary to stop the Typhon Pact from building a slipstream drive.
Dr. Bashir is lonely on DS9, as most of his friends have moved on, and former DS9 Captain Elias Vaughn is in a vegetative state after a battle with the Borg. Bashir is summoned to Captain Ro Laren's office where he meets with a Starfleet Intelligence operative named Aldo Erdona. SI wants to send Bashir to an icy planet in Breen space where they believe the slipstream drive is being developed; he is notably suited for it because of his genetic enhancements. He reluctantly agrees.
Erdona introduces Bashir to his fellow operatives: Jack, Patrick, Lauren, and Sarina, the genetically enhanced, but deeply flawed, Jack Pack. He is resistant at first, but reluctantly agrees to work with them since they won't tell anyone else what they know, which is that they have deduced that the Breen are actually a dozen different species, all with different biological needs, and that they should be able to sneak into the shipyard by wearing Breen armor. Bashir thinks it's a terrible plan, but Sarina convinces him.
Bashir and Sarina beam over to the USS Aventine, captained by Ezri Dax. The plan is for them to board a captured Breen vessel that will be destroyed in a simulated battle, then the Breen will pick up their escape pod. Dax invites Julian to get quarters for dinner. She tries to apologize for breaking things off back on DS9, but they end up squabbling.
The Breen tractor in the escape pod. The Breen crew that rescues them says they'll drop them off at Salavat in 10 hours. The Aventine notices a sensor echo and realizes they're being tailed by a cloaked ship, possibly a Romulan warbird. Dax changes their patrol to take them closer to a known Breen hub planet.
Bashir and Sarina are dropped off at the spaceport and find the Breen city is actually underground. They can't figure out how to get a hotel room, so they break into a maintenance alcove and camp out there. After resting up, they hang out on the street to improve their suits' translation heuristics, but eventually people get suspicious and the authorities chase after them. Bashir is shot in the leg while they escape in a subway car. They blow the train and retreat into an abandoned tunnel.
Thot Keer's superiors tell him he has 4 days to make the slipstream prototype work; he says it will take considerably longer because Breen ships aren't the right shape to enter a slipstream.
After eating and healing up, they poke their heads back out, check out a public information kiosk, and decide to head towards a military comm complex.
Chot Nar notices null errors dumped out from scans of identichips by the public kiosks and finds footage of Bashir and Sarina. She decides she's going to try and capture them herself to get a promotion.
The Aventine gets a distress call that they believe is a trap, but Dax decides to investigate anyway. Romulans await to ambush them, disobeying the Pact's orders.
Nar gets the drop on Bashir and Sarina, explaining how their chips caused null values for her to track. She offers to take them to her home to fix their chips, and they agree. Once there, she takes off her helmet armor and tells them to do the the same; she is shocked, as she's never seen humans before, and Bashir is shocked at how beautiful she is. She tells them about her species, the Silwaan, and about )some of the many others that the Breen consist of. She says only the government knows individuals' species, so people are promoted based on merit alone. The government also arranges marriages. Nar says she's telling them all this because she's a civilian dissident and wants asylum from the UFP for her people.
The other Typhon Pact members have called for a vote; they want the slipstream drive data. Thot Keer says he won't be able to integrate it with Breen technology without a massive increase in resources.
The Aventine arrives to find no ship at the source of the distress call. 3 Romulan warbirds decloak and demand that Dax surrenders; she says the hell she will, and 5 Klingon ships decloak.
A friend of Nar's named Chon Min arrives and fixes Bashir and Sarina's identichips. He is suspicious of them but agrees to take them to a hidden shelter called the warren, where dozens of different Breen species mingle without their masks on. He gives them a place to stay and warns them not to reveal their faces.
The Typhon Pact sends scores of ships to mirror the Aventine's course, blocking them from getting to Salavat. Dax plans to ask the Klingons to sus out the cloaked warbirds so they can make a run for it.
Alone in their room, Bashir tells Sarina how much he missed her when she left; she says she felt the same. They make love and say they'll never be apart again.
Nar calls Bashir and tells him and Sarina to come get their new credentials. After she hangs up, she notices that her call was tapped. They meet with her at the rendezvous point and she tells them they've been made; she says to go to the Ferengi bank to get their credentials, and not to follow her her. They hear sirens shortly thereafter. After getting their credentials, Bashir wants to warn the other dissidents, but Sarina says they don't have time.
President Bacco meets with a Klingon ambassador to ask for backup, but he says Chancellor Martok has declined; they know about the Breen infiltration operation on Salavat, so the Pact must know too.
Bashir and Sarina's credentials get them into the government building with ease, until someone asks for their orders when they try to access the system. Sarina kills him, to Bashir's shock, and she accesses the location of the slipstream prototype.
They return to the warren to warn the other dissidents, but they're too late: the Breen are already rounding them up. They decide to head to the hotel in their fake credit history. Sarina decodes the data and they find the slipstream lab is 2000km away. They book a 7 hour train ride and go.
Thot Keer tells the domo he needs more 700 more people and $6B to get the slipstream done in the 3 days they have left. Both are granted, but the consequences for failure will be severe.
Dax's crew comes up with a plan to hack a Breen relay to send a fake distress signal saying the Klingons are attacking.
Bashir and Sarina arrive at a city surrounded by a massive underground lake. Their ferryman tells them there's a hiring frenzy for ship work. Bashir realizes they must make the parts here but ship them elsewhere for assembly.
After being tortured extensively, Nar gives up everything about Bashir and Sarina before she dies, except their real aliases.
Bashir and Sarina scale a tower, hack a computer, and figure out that all the parts are going to the nearby recycling center. They sneak into it via sewer tunnels, and decide the best way to figure out where the barges go is to sneak onto one inside a recycling pod. Bashir enters a pod and an alarm goes off, warning of human infiltrators on Salavat. Sarina forces his pod to go and stays behind to give him cover. She is ultimately overpowered by a squad of Breen soldiers.
Bashir's pod stops short of the Breen scow, so he has to rappel to it. He can't find a way in, so he uses his suit's magnetic clamps to cling to the hull, as it does along the water--then breaks atmosphere. Judging by the ship's trajectory, he thinks the shipyard must be hidden in the system's asteroid belt.
Sarina tells the inquisitor that she will break him before he breaks her, but the neural truncheon is much more painful than she expected. She drops a lie that there are other Starfleet infiltrators within the Breen, and he seems to buy it though. She feigns passing out, so the inquistor tells his subordinates to take her down to rest. When they undo her constraints, she grabs one of their disruptors and shoots them. She gets her suit back on and tells the inquisitor over the comm that the prisoner is awake.
The Breen scow enters the shipyard, hidden in a camoflauged asteroid. Bashir rappels in just as the docking bay doors close. He picks up some cables and blends in with the work crews. With everyone working hectically to build the prototype in time, security is lax. He makes his way to the command level, kills 2 guards, and then kills 6 engineers. They're just about to bring the ship online when an alarm goes off, saying the base's core is about to breach. Bashir inserts an optolythic rod into the Breen computer system that deletes all slipstream data and corrupts any backups. He shoots some guards on his way to an escape pod.
Sarina takes the inquisitor hostage, makes it to an interceptor, and detonates some explosives in the docking bay on her way out. Before long she is intercepted by a squad of fighter pilots.
Bashir hijacks a maintenance ship, sets the autopilot to collide with the slipstream ship, and uses a fire extinguisher to propel himself outside the asteroid base's dampening field. He triggers his emergency recall beacon.
The Aventine sees Bashir's beacon go off, so they deploy a virus to the Breen comnet that makes it look like their outer planets are being invaded by Klingons, leaving only Romulans to defend the border.
Sarina sees Bashir's beacon go off during her dogfight with Breen interceptors, so she activates hers too and heads to his position. When she runs out of fuel, she ejects herself towards him, hoping she'll make the rendezvous in time.
The Aventine arrives and Bashir tells them to stop the prototype ship from leaving the base. If they fire it's an act of war, so they use the ship's shields to stop it from exiting the asteroid. The Breen ship tries to fight back, but they don't have enough power or time. At the last moment, the Aventine drops it's shields, beams Bashir and Sarina aboard, and does a warp hop out of the way as the asteroid explodes. On the transporter pad, Bashir asks Sarina what's next and she says she'll go wherever he goes.
In Bashir's quarters, while he is asleep, a Vulcan Section 31 operative named L'Haan tells Sarina to make sure Bashir falls completely in love with her so SI can manipulate him via his romanticism. Sarina says it will be no problem.
Review: 3.5 stars. I liked the idea of the Breen being multiple species; I hope they make that canon if they're ever mentioned again in mainline Trek. I found it somewhat unbelievable that the Jack Pack would be part of Section 31, but I did like the twist at the end that Sarina is just using Bashir. Overall, the plot was fairly interesting on paper, it just never really grabbed me in practice.