Air date: 9/17/71

The family begins their third annual camping trip. This year the trip would be to the Grand Canyon and a visit to a ghost town. A demented prospector, who is convinced that the Bradys are out to jump his non-existent gold claim, locks them in the old jail while he commits Grand Theft Auto. While Greg volunteers to go search for the car with Mike, he gets told that in Mike's absence he is the leader of the family, and his duty is to watch over the children and the ladies. Thus Peter is made to search with Mike.

Grand Canyon or Bust

Air date: 9/24/71

The family, having escaped from jail, begins efforts to call for help - by starting a huge signal fire. Just then, the prospector returns with Mike and Peter in the car with him, and Mike has convinced the old man that his family is no threat to his fictitious gold claim. They leave the ghost town and arrive at the Grand Canyon. While there, Cindy and Bobby get lost after chasing a Native American young man Jimmy, who eludes them.

The Brady Braves

Air date: 10/1/71

Mike comes to the aid of a runaway Native American boy Jimmy, who believes his grandfather Chief Eagle Cloud would scoff at the idea of Jimmy someday becoming an astronaut. The Bradys wind up their Grand Canyon vacation by participating in a ceremony making them honorary members of Chief Eagle Cloud's tribe. During the ceremony, Chief Eagle Cloud gives honorary names to all nine Bradys: Big Eagle of Large Nest, Yellow Flower with Many Petals, Stalking Wolf, Middle Buffalo, Wandering Blossom, Little Bear who Loses Way, Dove of Morning Light, Willow Dancing in Wind, and Squaw in Waiting.

The Wheeler-Dealer

Air date: 10/8/71

Greg learns the principle of "Caveat Emptor" when he gets his driver's license and buys his first car from a slick-talking friend. But all the restoration in the world can't change the fact the car, which is a 1956 Chevrolet Bel Air convertible, is a lemon. Greg plans on selling the car to his gullible friend, but has a change of heart and sells it for junk instead.

My Sister, Benedict Arnold

Air date: 10/15/71

Greg is furious that Marcia is dating his rival, Warren, who has beaten him out for class president and a spot on the first-string basketball team. Greg asks out a rival of Marcia's, even though Greg would rather date other girls. In the end, Mike and Carol counsel their oldest children about using their dating partners to annoy each other. In the subplot, the Bradys are busy building a "dunk tank" for an upcoming carnival event.

The Personality Kid

Air date: 10/22/71

At a party, Peter was told he has no personality. Rather than admit he simply had a bad time at a dull party, he tries to create a new personality. He watches TV in his room on two separate occasions and forces several different personae, including an impersonation of Humphrey Bogart as Joe, in describing the family's dinner menu "porkchops and applesauce", but none of them go over well. Later, he buys a joke book, but when he tries them out at his party, he finds everyone knows the punchlines. Just as he's trying to keep his party afloat, Bobby and Cindy call a surprise fire drill, forcing everyone to flee the house.