Still without his jacket, the Doctor follows River and Octavian through the forest. River screws around not answering the Doctor's questions about her relationship to Octavian, and finally the Bish has had enough. "Dr. Song is in my personal custody. I released her from the Storm Cage Containment Facility four days ago, and I am legally responsible for her until she has accomplished her mission and earned her pardon." So it's like To Catch A Thief, or that movie about Catherine Zeta-Jones's ass.
The Doctor is somewhat intrigued by this, but then instead of pursuing it, he shows her some machinery and explains what we know about the Crack so far: "One day there'll be a very big bang. So big every moment in history, past and future. will crack." He shows her the date of the explosion, when the Crack begins, and it's Amy's wedding day. Meanwhile Amy sits, hamstrung and blinded -- having left the Library, essentially -- and there's like six soldier-priests taking care of her. Then the lights start going out as the Angels somehow are ripping the treeborgs apart, and the soldiers are getting nervous.
The whole reason they are called Weeping Angels is because they cover up their faces so they can't see each other because if they see each other they will stay stuck in their quantum-locked stone forms. Just saying. Even if these are substantially different because they are stronger (as we were told in the first half) or weaker (which we were told in this half I think), that would still be true. They are still called that name. I hate this fucking episode.
The Doctor's pointless ellipses have even begun to annoy River, formerly his partner in crime. "Time's running out... What if it could? Time! What if time could run out?" I wish somebody would do that shit to him so he would see how obnoxious it is. There's lots of scary light-dark-light going on with Amy's life, and the Doctor running around being a dick, and then the Crack starts opening up at the nub end of the forest, through the trees. The Angels disappear, running away as quickly as possible, and then the soldiers start heading over to check out the Crack, and vanishing not just from the situation but also time and space. The only one that remembers them at all, in fact, is Amy.
So you've got Weeping Angels, gravity is an issue, cybernetic trees, a great jolly Crack in Everything, soldier-priests vanishing from existence, Amy's got sand coming out her eyes and is now blind and is also counting down, you got the Doctor somehow having his jacket on and not having his jacket on, the reanimated brain matter of Sacred Bob, River Song is the Doctor's wife and also a jailbird... I mean, it's exhausting. It's fun to throw all the pieces up in the air but you do actually have to catch them, also. It's called "spinning plates," not "awkwardly dropping plates because you had too many plates."