Local villagers warn the Ark II team that Isaiah is dangerous and that they plan to “put him in a cage and take him out to the great desert.” Rather than allowing this exile to happen, the crew attempts to befriend the wild boy. Isaiah is welcomed aboard the Ark II vehicle and taught how to operate the craft's systems. However, when Isaiah spots the recently mined crystals, he grows violent and angry, and runs away.
In less didactic terms, “The Wild Boy” is a cool episode of this 1970's Saturday morning TV series for a few reasons.
The first is that this story provides for the closest thing to a car chase we get on the program's roster. Samuel loses control of the Ark II, and Jonah and Ruth must catch up in the Roamer and board the craft in motion. This sequence is well-shot, and amps up the action quotient of the episode and the series considerably.