Bobbie goes to the aid of Charles, a filmmaker, trapped in an ice hole by a wartime bomb. A pretty lady journalist (Ingrid Pitt) sees a scoop in the news. The journalist is covering the de-fusing of the bomb—but the local people don't want her to write about it. Bobbie is the only one who can possibly enter the hole and defuse the ticking gadget.

Bobbie and Sadie are trapped high in the mountains by a blizzard. Then they hear a mysterious voice . . .