Government agent Dick Barton battles a ring of Nazi spies who are planning to poison the entire London water supply.
For showing cowardice during a holdup, bank teller Bob Hunter is fired. He joins the Mounties and is assigned to look for those robbers. To have him work undercover, the Inspector's scheme is to have Bob supposedly kicked out of the Mounties.
A miner, played by Scottish singer Hamish Menzies, meets a holidaying secretary on the Kent coast and love blossoms.
