Tess and Dan are prevented by icy roads from delivering a revolutionary new tele-communications satellite to its reclusive inventor, Dr. Russell for a final check before launching. Tess and Dan are separated when Dan wrecks Roadie and must get the car repaired.

Tess and Dan are sent to participate in a California - Mexico race where it is believed a stolen computer program is going to be smuggled out of the country in a microchip. Tess and Dan suspect different people, but the real culprit is Mr. Wilson, a mechanic, who hides the microchip in a game which he lends to Daisy to play with.

Tess, Dan and Daisy return to their hometown so Tess can be the Queen, as was her mother and grandmother, in the Queen's Pageant that is held every twenty-five years Tess, worn out from their hectic lifestyle, is happy to be home but the valuable amulet she wears as queen is snatched from her during the parade. After a wild chase and some detecting, the thief turns out to be the son of as woman who lost the contest to be queen years ago.

Tess and Dan are puzzled by the apparent prosperity of a formerly abandoned gold mining town and by the hostile reception they receive from the local Sheriff. It turns out the Sheriff and Mayor discovered stoles gold and had been using it to keep them from going under.

Pole Position agent, Greg Dumont, poses as a double agent to lure Wheels and Roadie to Alex Vance, a man out to destroy the computer system of Pole Position by using the memory bank of Wheels and Roadie. Zachary patches into Vance's computer and informs him of the double cross and explains it was a plan to get Wheels and Roadie into Vance's computer in order to destroy that computer system.

Tess, Dan, and Daisy stumble upon a town under the control of an evil magician. He has used his tricks to frighten the people into missing the gold out of an abandoned mine in order to rid the town of the demon. Daisy disappears in one of the tricks. Tess and Dan expose the tricks to the children and persuade them to tell them where the mine is located.

Sections of four different paintings are mysteriously being stolen. After being duped several times, Dan discovers the "thief" is a small robot being controlled by the soda machine vendor. The sections, put together, reveal the major circuit of an enemy power's new master computer.