It's about two years after the events of the first series and Reacher's looking a bit more haggard than he did previously, something that Neagley- who has a much expanded role in this series- remarks upon. He has also bulked up though; he's even more muscle-y than he was in the first go around. He has opportunity to use this bulk from the get-go; while waiting to use an ATM, Reacher notes that the woman using it ahead of him is bruised, bloodied, and shaking with fear. Surveying the area, he sees a minivan at the corner obviously waiting for her. Telling the woman not to turn around, he asks if she's been car jacked; she affirms this, saying that the man has a gun on her small child in the vehicle. Reacher tells her to wait there and purposely strides up to the van, wrapping his coat around his fist which he then proceeds to smash through the driver's side window. He disarms the thug and then renders him unconscious, inflicting as much damage as he can while doing so. Reacher then walks away. Ain't gonna lie: there's something very satisfactory about watching a really big man unmercifully pummel an evil creep using a child as a hostage... there are a lot of people in this world who deserve a good pummeling, or worse.
As for the main plot, Neagley has contacted Reacher- famously difficult to track down because he keeps moving and doesn't carry a phone or any ID- because a former army colleague has been murdered. As the two investigate, it becomes obvious that someone is trying to take out all the former members of their military team of Special Investigators. They meet up with another former member- O'Donnell- and search for another, who is missing and presumed dead. They are trying to contact the other former team members but getting nowhere, which may or may not be worrying; most of them keep a pretty low profile. It also becomes clear that Reacher and Neagley have picked up a tail: while they're out investigating, their hotel rooms are tossed by people obviously looking for something. They conclude that whoever murdered their former colleagues is now coming to kill them; Reacher ominously says, "Good." Obviously he intends- as he did when his brother was murdered- to kill every last one of the baddies to make them pay for what they've done. Oh, and there's a mysterious bad guy on the loose who seemingly has multiple identities/passports. His motivations are unclear at this point.
That's about where the first episode ends; I'll watch the rest of the series and let you know what I think. So far it's been about what I expected, which isn't a bad thing.