Bridge. Quantum and May-Partly-Cloudy realize there's something wrong and they can't get a hold of Trip. Futureprise takes off and ignores their hails. They start shooting.
Firefight in the skyyyyy, I can go twice as hiiiigh! Take a shot, it's in the pot, bleedin' painbow! Bleedin' painbow, painbow, painbow!
At this point, I was really impressed by how they kept cutting seamlessly back to each bridge for successive shots. As the camera panned over one bridge, they'd cut to the other and still be in the exact same place as the camera continued panning. It was neat.
More chasing and firefighting.
They lose power, they lose hull plating, they can't do stuff. I'm not keeping track of which ship can't do what because it really, REALLY doesn't matter.
T'Pol manages to beam an EPS manifold off Futureprise. Is that an important part? I don't really care. T'Pol beams more likely important stuff off Futureprise, and Futureprise loses power. Quantum suggests that they call a truce and return each other's toys. Reed notes that Futurerprise has its final torpedo aimed at their starboard engine. Quantum guilts them into not firing at them by saying they're "going to hurt a lot of people over here." Over on Futureprise, Perma-Furrow talks Tri'Progeny down from his rooftop and reminds him that Quantum and Qrew are family: "I'm not going to let you kill them." Of course you aren't, because then YOU WOULDN'T EXIST! I'm sorry, but I really, really hate stupid time-travel episodes. If you can't get it right, DON'T DO IT!
The Evil Dr. Mathra: Some would argue that the laws of physics say that it's impossible to kill your own father.
Keckler: Huh. I guess Oedipus was sick that day.
Tri'Progeny orders, "Stand down weapons. Tell Archer I wanna talk." Dude, you just had him on the phone -- why don't YOU tell him you want to talk? Sigh, this is what corporate captaining does to people -- they choose to forget how to do the simplest things.
For a secret special reason known only to himfurrowself, Quantum chooses to put Tri'Progeny in the brig while they have their "talk." Quantum lectures him about his choices, and Tri'Progeny tells Quantum he can't accept that his Mission Infurrowable is over. Tri'Progeny then whips out his Vulcan violin and plucks out a dirge about carrying around the responsibility of millions of people's deaths. Twing, twang, bit-ter dregs. Ahh -- ahh, bit-ter dregs. Strummy-strum-strum. "I'm sure your crew did everything they could to stop the probe," Quantum cold-comforts. "I could've destroyed it!" Tri'Progeny shouts. "Years ago, I swore to my captain on my deathbed that I'd save those seven million lives. You were the man I made that promise to!" Oh. What a surprise. Wait, wait, I have to pick myself up off the floor. Tri'Progeny goes on about devoting his life to the mission, figuring out every detail, and finishes by admitting that they failed because he hesitated to set Futureprise on a collision course to destroy the Psycho Bocce Ball. His emotions and lack of sufficiently pointy balls to sacrifice his crew took over. Tri'Progeny insists he won't let his emotions get in the way again, and this time he will STOP the Psycho Bocce Ball. Quantum walks into the cell and says keeping him locked up wouldn't do them any good: "All that matters is what we're going to do next -- whether you agree with it or not, I'm taking my ship into that corridor and I'll stand a much better chance of completing this mission -- our mission -- if we work together."