Summary: Wesley Crusher, Traveler, pops in to the center of the galaxy to visit some old friends that live there, only to find a massive, planet-sized Machine using artificial wormholes to pull planets and their entire star systems from their proper place in the cosmos and feed them into Abaddon, the super-massive black hole in the center of the galaxy. Wes calls all his fellow Travelers together, hoping they can band together and save the galaxy, but they tell him they've encountered this Machine before in other galaxies, and have never been able to stop it.
Wes pops onto the Enterprise and pleads with Picard to help. When he agrees, Wes transports the Enterprise to the center of the galaxy, where they witness The Machine annihilate an entire fleet of ships that came through one of the wormholes--but notice that it only attacked the ships with weapons on board.
Worf leads an away team inside The Machine using a weapon-less shuttle. Inside, they establish contact using a tricorder and find that its goal is to increase the mass of Abaddon enough that it can pull it through a wormhole too, then slam it into Sagittarius A*, the even bigger black hole at the center of the galaxy. This would create a subspatial lens that would allow The Machine to transmit signals across the universe, back to its home galaxy--but would also destroy subspace throughout the entire galaxy, and unleash a blast of radiation that would kill all biological lifeforms in the Milky Way. The away team pleads with it not to do this, but it says "carbon units" are irrelevant. T'Ryssa remembers V'Ger, and realizes this Machine must have been created by the same AI race that assimilated Voyager 6.
Diplomacy and bargaining having failed, Picard sends another away team to The Machine with tri-compound explosives, hoping it won't notice they're building a bomb since the components are kept separate. It notices almost immediately and sends a bunch of machines to rip, shred, incinerate, and utterly destroy the away team. They realize the only way to stop The Machine is to get another AI being to bargain with it, so Geordi calls up Data on his quantum transceiver.
Data, however, is being held prisoner on board Altanexa, a sentient ship carrying organic-hating androids rejected from the Fellowship of Artificial Intelligence, lead by an android named Gatt. Data went there to find and save Emil Vaslovik, so he can get him to resurrect Lal, and once there he finds that his old android flame and Vaslovik's "daughter", Rhea McAdams, is being held captive as well. Data tells Geordi he won't leave until he can rescue both of them, so Wesley pops onto the ship to explain the situation with The Machine.
The Androids agree to let Wes take them to The Machine, but Gatt attacks and stuns him as soon as they drop out of hyperwarp. Gatt goes over to The Machine and interfaces with it; it re-writes much of his code and convinces him that he and his AI crew must meld with the "Body Electric" so they can become immortal--however, they must prove they're worthy in order to be assimilated. Gatt assumes that the ability to resurrect dead AI will suffice, so he threatens to kill Rhea unless Data can extract the secret from Vaslovik, via torture (Vaslovik tells Data to do it to save Rhea). Gatt presents the Body Electric with the secret to resurrection, but The Machine isn't impressed--as long as its data can be passed on, what does it care if its current shell survives?
This makes Gatt even more fanatical. His first officer, Tyros, decides things have gone too far, so he hatches a plan to help Data, Rhea, and Vaslovik escape. Picard demands to see that the prisoners are alive, and during his visit, he drops off some of Wesley's nanoprobes (from TNG: Evolution) that allow the Enterprise to take control of the ship. With the ship's systems cut off, the prisoners escape from the brig. Data attacks Gatt and breaks all his limbs, then escapes in a shuttle with Gatt in tow. Rhea and Vaslovik escape in 2 separate escape pods, but the pull of Abaddon is too much so Data needs to use a tractor beam to rescue them; however, his ship is damaged and he can only save one of the pods. Rhea tells him he has to save Lal, so Data begrudgingly lets her fall into the black hole and toes Vaslovik away.
Having completed his mission (more or less), Data contacts the Body Electric and tries to out-logic it; however, it still can't be reasoned with, and it seems all hope is lost. However, T'Ryssa Chen realizes that The Machine is actually just trying to make art, in order to leave behind a legacy that can be seen from all galaxies for billions of years, long after The Machine itself has ceased to exist. They ultimately convince the Body Electric that although its art will last a billion years, that's still not forever; why not work with the Travelers to repair subspace and create a system of of warp tunnels from galaxy to galaxy that will benefit all life in the galaxy, and last all the way up to the heat death of the universe itself? The Machine thinks about it a second, then agrees.
Data fixes Gatt, who is abashed by his fanatical behavior. Vaslovik fulfills his daughter's dying wish and brings Lal back to life.
Review: 4.5 stars. I thought there was no way any book could ever top the epic story told in the Destiny trilogy, but I'll be damned if this isn't just as, if not more, epic! David Mack epitomizes the philosophy of "go big or go home", and he almost always delivers.
I must admit, I was sold right from the start when I realized we were going to get a story about Wesley as a Traveller. I thought the whole Traveller thing was pretty weird/lame in the show--but I also always wanted to know what became of Wes once he decide to become one. I was not disappointed! (It still feels like a load of pseudoscience hooey though, so I wouldn't mind a book that goes into more depth about the Travellers as a whole; I kind of wish Wes would've been in this from book 1 and expanded upon.)
I was also immediately captivated by The Machine, and the fact that it was destroying entire star systems the way I destroy popcorn. Once I realized it was V'Ger, I was like "yes, this awesome!" It could've easily gone the other way for me--I disliked "Immortal Coil" due to all the gratuitous TOS call-backs--but it made sense that perhaps one day we'd find out just what the AI race that created V'Ger were on about. It was a pretty interesting twist that they were just trying to make art for the universe to remember them by--a little weird, but I can buy it.
On the minus side, the ending was a bit anticlimactic, but it also made perfect sense since there was no way would could defeat the Body Electric with force; it reminded me a lot of how The Borg were defeated in Best of Both Worlds part 2. However, the repercussions should be huge in future books, since now there will apparently be intergalactic highways for everyone to use. I hope this storyline continues down the line!
One thing that I'm not sure is a plus or a minus is that this "trilogy" is more like a season of the TV show, where each book is its own plot but with over-arcing elements. I do wish the story could've been a bit more integrated, like Destiny, but the diversity of tales also kept things fresh--and it was exciting when the bits of continuity did creep in (e.g. the Fellowship of AIs did end up being integral to the story, even though they were only briefly mentioned in the first 2 books).
One last big plus for me is that finally Mack didn't kill off any of the new characters, right as I was starting to like them! (We even got a bit more character development for T'Ryssa Chen!) It was pretty obvious that the away team full of redshirts was going down, but it was kind of fun how gruesome their demises were--and I didn't really remember any of them anyway.
The only truly bad part about this book is that it will never be made into a movie! Ah well, I'm glad the TNG universe lives on in words, at least.