Lt Rose is persuaded by a woman to give her a tour of his battleship. She enlists the support of her fellow spies, one of whom dresses as woman, who tour the ship and steal the code book. Such is the Royal Navy's determination to retrieve the book that they open fire on the spies in their rowing boat. When that fails, they pursue them on land, and finally open fire on the escaping enemy battleship.

A spy poses as a captured lieutenant and steals a ship. The lieutenant escapes and bombs the ship from a monoplane.

A woman swims to a battleship to alert its crew to the kidnapping of Lieutenant Rose.

The lieutenant chases a gang across the sea and ice-floes.

Lieutenant Rose poses as a woman to save the Governor's daughter from a rebel's cannon.

Chinese rob an embassy and the lieutenant poses as a Chinaman to row for help.

The lieutenant poses as a Moor to escape a besieged embassy and shells their hideout.

The Lieutenant in a car chases a count in a train and is scooped aboard with a mailbag.

The lieutenant finds treasure in an underground cave and signals with a mirror for a ship to shell the Portuguese don.

Lieutenant Rose escapes capture, unmasks a Moor posing as a sailor and shells a town.