Learn about....stranded in a desert ghost town, most of the Brady family tries to figure a way to save themselves, while Mike and Peter head off on foot for help. They are eventually saved when Mike and Peter return with Zaccariah and their car. Zaccariah really was coming back to set them free after he registered his gold claim. With their vehicle and gear returned, the family heads to their ultimate destination of the Grand Canyon, which does not disappoint them. After spending the first day and night atop the canyon, they descend to the canyon floor on mule-back, much to Alice's dismay. After they set up camp, Mike tells all the kids not to go exploring on their own as they don't know the terrain. But the family hits its second crisis of the trip when Bobby and Cindy go missing. Unknown to the rest of the family, Bobby and Cindy were intrigued by an Indian boy they spotted, who disappeared when they ran after him. Bobby and Cindy eventually get lost. As night approaches, everyone becomes concerned. And a lot of great companies.