An escaped convict forces Dennis and Billy to divert their scheduled course to Sudbury and fly him to the U.S. border. However, a violent storm forces Dennis to make an emergency landing and he is injured during the crash. The young convict is forced to make an agonizing choice: Can he let a man die to save his own skin?

There is a frantic air-ground search for two Indians who have stolen some food and gone into the bush because it is discovered that the canned salmon they took with them is tainted with fatal poison.