Back in the day when stunt cyclists soared to the zenith of the zeitgeist, a most unusual circus family roamed the byways and highways of Saturday morning. Led by eldest sibling Ernie Devlin (voice of Michael Bell), a daredevil stunt cyclist, aided by master mechanic younger bro Tod (voice of Mickey Dolenz) with little sister Sandy (Michelle Robinson) handling publicity, the Devlin clan travels across the country with a traveling circus