Section 1
- All the people from town and the surrounding countryside come to Granny's funeral. Many of them are riding the mules she lent to them.
- Brother Fortinbride tells the men to start digging, and they do. They bury Granny, and Brother Fortinbride says that Granny wouldn't have wanted everyone standing in the rain when there's work to be done, so everyone goes home.
- Uncle Buck, who helped to bury her, asks the boys what they're going to do now.
- Bayard tells him he wants to borrow a pistol.
- Uncle Buck says that he will give him the pistol. Also that he's going with them.
- Ringo says something about killing Ab Snopes, and Uncle Buck takes them up to Snopes's place. They sneak around the back and see the horses that Snopes had been after all along in a hidden pen.
- Uncle Buck says that Ab Snopes is working with Grumby now that Granny is "out of business," and then goes to the front of the house to find out where Snopes is.
- A woman answers the door and says that he's gone to Alabama, which Uncle Buck takes to mean that he must be in the other direction.
Section 2
- The three men ride on mules for a couple of months, searching for Grumby. One day they find a burned-down house with a dying woman. She tells them how many were in the gang that had attacked her and asks them to kill them.
- One night Ringo climbs onto a house and falls through the roof. Guess who's there? A meeting of Grumby's men. Sadly for the avengers, they get away.
- Another night a man with black hair covering his hands shows up at their fire and says he's looking for a man named Grumby. Ringo slips up and tells the man they're after Ab Snopes. He leaves, and as he goes tells them to stick with Snopes and leave Grumby alone.
- He also fires at them as he leaves and hits Uncle Buck's arm.
- The boys doctor it up the best they can, but Uncle Buck isn't doing well. The next day they see a dead moccasin (a poisonous snake) frozen in the ground. Uncle Buck thinks it's a sign, and suddenly they hear some horses galloping off. They continue until they see what the commotion was: it's Ab Snopes, tied to a tree on the ground.
- They untie him and he claims that he had been captured by Grumby. Then he apologizes, and begs for mercy.
- Bayard beats him up for a while, but he falls to the ground and won't get up anymore. Which makes beating him up not as fun.
- In the end Uncle Buck and Ab Snopes ride back home because of Buck's hurt arm, and Ringo and Bayard continue on together.
Section 3
- It rains all the time during the boys' final journey after Grumby, and finally, when it stops, they see another sign.
- It's a black man, hanging from a tree over the road, with a note pinned to him saying to turn back and signed "G."
- There's a P.S. on the note, probably written by the man with the hairy hands, also begging the boys to turn back for their own safety.
- The boys keep riding and Hairy Hands jumps out of the bushes and says that they have to stay where they are, that he'll be watching, and then hides again.
- Three more guys come out, with the one in the middle tied up. It's Grumby, and the two men cut his hands free and train their pistols on him so he can't move. The two men say that Grumby is a coward and ruined what they had going. Then they say they're headed to Texas and ride off.
- Grumby shoots at them but they get away.
- He's still got two shots left, though, and suddenly shoots at Bayard. Ringo tackles him, but Grumby gets away. Bayard shoots him in the back as he runs.
Section 4
- The boys go that night to the old compress, where Granny was killed, and then ride home.
- They stop at the cemetery on their way.
- When they get home they find out John and Drusilla are already there, and that they went off with Uncle Buck to search for the boys.
- The boys sleep like rocks after their terrible journey, and wake up to John, Uncle Buck, and Drusilla hollering about how they nailed Grumby's body to the door of the old compress and his right hand to Granny's grave marker.
- And that's how justice is served.