There was this man, see, who wants new sensations to erase the memories he has. He buys an octopus from a man named Nog.
It wasn't a real octopus, but it looked like one. He was a great fabricator, Nog was. Made some dough by exhibiting the Octopus at side-shows in the West. But he would not lie when anyone asked if the thing was real. He was what Griel Marcus would call an “old, weird American.” He would never “remake” himself to fulfill an “American dream” no matter how much easier it would have been to manufacture and “identity” people could “trust.”
The man who narrates the novel travels around the Western U S for most of the story. He needs memories, like I said, so after the Octopus pulls in his tentacles and fades out, the narrator replaces it with visions of Nog, who lurks around every rock, providing lots of possible memories. The narrator is empty of them. He wants to live free. He is open to whatever happens as he wanders, existence in the present being the only reality.
There is no essence or absolute in sight, except maybe the 18 cans of food he carries, and sometimes builds wall with so he can sleep behind them . Nog at some point merges with, or becomes, the narrator. Usually, if a man meets his double, he can lose his own identity. That doesn’t seem to bother the narrator. He has no identity. He meets a fellow wanderer and his girlfriend; they are compatible, especially the young woman. They accept him as a fellow free spirit, one of them. Impossible. If he doesn't have a self, how can he be one of any group?
IMO, the key episode is when Nog (for I guess it is he now) meets and helps Bench, an injured hunter “with an unorganized face” who complains about his son who he wants to be a professional placekicker. Bench is like Willy Lowman (“I got to give that boy something”). Then Nog becomes part of Bench’s plan to kill people who have taken over a nearby ghost town (a few buildings and outlying teepees, like in the Western classic Butcher's Crossing). In the saloon, the squatters pass around a pipe and are dressed in bright, unmanly clothes. “You got to fight back…. I know what it took to discover and hold this country…If a man doesn’t defend his claims he’s hardly a man…. This piece of country and this town is ours.”
Bench confuses Nog with his son at this point. It’s time for the snap from center. He promises Nog he will carry him out of the stadium when it’s over and buy him a steak dinner. They embrace. Nog has fallen into a rock-sold Western memory, as cruelly self-reliant and judgmental as it gets. Nog isn’t really in the game. The phrase “I can’t go on. I’ll go on” comes to his mind. He sails around Cape Horn, and flies to New York. Nog is gon[e] [spelled backward.] I wonder what he'll make of Times Square, the wild East in 1968. There were a lot of resistance to manufactured identities there, and everything solid melted into air. Maybe Nog would be at home there, and so would the missing octopus.