When Frank and Joe join their uncle for lunch, the main course turns out to be a bizarre kidnap plot. After a violent scuffle, Uncle Hugh is whisked away, and teh boys suddenly find themselves in deep trouble with a U.S. espionage unit.

Special Agent Starkey is out to prove Hugh is a traitor and accuses he boys of helping him escape. To complicate things, a beautiful mystery woman called Charity is also on their uncle's trail. Meanwhile Frank and Joe are stranded in a strange city far from home, being hunted down by two despersate gangs -- with orders to shoot to kill....