“All Good Things…, Part II” is episode twenty-six of season seven of Star Trek: The Next Generation and the second part of the two-part season and series finale.
In the previous episode, “All Good Things…, Part I”, when Q appeared it was in the same courtroom he was in in the first episode, “Encounter at Farpoint, Part I”. He told Captain Picard that humanity would be destroyed. Not by the Q; by Picard himself.
In the present, the captain is talking to the senior staff. Geordi asks if it could be one of Q’s games; the captain thinks Q is serious. In some way, Picard is going to cause the destruction of humanity. He had caused it and was causing it now. Data agrees that may be accurate if confusing. The captain states Q admitted he was shifting Picard around. He may be giving them the chance to save humanity, as Q has evinced interest in them and Picard. They’re contacted from the bridge; they’re approaching the Neutral Zone.
There are four Warbirds on the Romulan side; Bozeman and Concord on the Federation. The captain says to hail the Romulan flagship, then is talking to Worf who has been hailed from the Pasteur. Worf refuses them entry to the Neutral Zone for their own safety, but Picard uses Worf’s honour and loyalty to agree. As long as Worf comes with. A course is set and Dr Crusher, now Captain Picard, gives her ex-husband the chair.
And he’s back in the past as they’re approaching the Devron system. Troi wants to speak to the captain in private. In his ready room, she says some of the crew are concerned, others are confused. It takes time for a crew to get to know their captain and vice versa. Tasha contacts them from the bridge; she has Commander Riker. Picard tells Riker they’re going to be delayed.
In the present, the captain is speaking to Tomalak; they agree to each send one ship into the Neutral Zone to investigate the anomaly.
Data reports a large subspace anomaly, then in the past he reports the same thing. Except it’s even larger in the past. In the future, though, there’s nothing. Worf reports Klingon communications indicated warships are being sent into the sector to search for a renegade Federation vessel. Picard asks Data if there’s another way of searching the system. Data can modify the main deflector to emit an inverse tachyon pulse. It will take 14 hours to do a complete scan. The doctor allows six. Picard objects and she says she wants to see him in private, and chews him out for questioning her orders on her own ship. He’d never have tolerated it. He apologises, but Q said all of humanity will be destroyed. She tells him that, given his illness, it may all be in his head.
In the present, the captain tells Data to do the modifications the future Data suggested. Data heads to engineering and is speaking to Geordi when Geordi comes over funny. His VISOR is picking up EM fluctuations all over the spectrum. Data reports a medical emergency, and in sickbay Dr Crusher tells the captain that Geordi seems to be growing new eyes. Other crew are reporting old scars healing. There seems to be an eruption of antitime, and time and antitime annihilate each other and rupture space.
In the past, the captain reports this to Data. In the future, the Pasteur is under attack by two Klingon attack cruisers. The Pasteur is severely outclassed and is on the verge of destruction when another ship decloaks. The Enterprise. She destroys one Klingon ship and drives off the other and beams everyone off the Pasteur which explodes.
The anomaly is, due to antitime, growing larger the further it goes into the past. Captain Picard needs to figure out what’s happening and what caused the anomaly before it’s too late.