When young reporter and amateur biker Jerry Marsh investigates a mysterious hooded figure on a motorbike, he discovers crooks hiding out in a ruined castle with atomic sabotage on their minds...
Katie attempts to save her father's failing garage, after he is killed during a stock car race. She is assisted by an American driver, Larry Duke, but unfortunately one of the creditors is determined to take the garage.
A world-weary sculptor meets a young ballerina and finds she has inspired a fresh outlook on life in him. He starts a life-sized sculpture of her but this enrages her jealous lover.