Alan Holt is a radio expert who has invented a death ray machine for the U.S. government. International spy Drakma wants to get his hands on the invention and he sends his henchmen to attack Holt in his laboratory.

A gentleman thief charms a Viennese baron's wife and also conducts a daring daylight robbery of a jeweller's shop.

When seaman Matt Peasley and his friend, Murphy (Hugh Cameron), go ashore in San Francisco, they save Florrie Ricks (Agnes Ayers) from a couple of robbers. Matt falls in love with Florrie, whose father is ship owner Cappy Ricks (Charles S. Abbe).

Tillie and Augustus Winterbottom are thought to be missionaries when they arrive to find Phineas Pratt trying cheat the Sheridans out of her father's inheritance, including a ferry franchise and a boat. The only way to keep the franchise is to win a race against Pratt's boat.

A greedy poacher travels to a small island in the Bering sea to rob a seal rookery. There he falls for the governor's daughter who learns that the poacher is the estranged son of a prominent citizen.

Two incompetent private detectives pose as swamis in order to infiltrate a gang of bank robbers.

Boy Leyton is second mate on board the Lady Spray, the ship on which his father is Captain Leyton. Boy is often chided by his father for his effeminacy and more often beaten. While in port Boy proposes to Minnie and suggests that she go to Glasgow to meet him there to be married. The ship sails and the Captain learns of his son's intention to marry. He calls him in and tells him about his mother, who deserted him, and tries to turn him away from all women, but Boy refuses to listen. The Captain is suddenly taken ill, but before he dies he makes Boy promise that he will not marry until he has found the man who wronged his mother. The Captain is buried at sea and the ship continues on its course. Upon reaching Glasgow Boy tells Minnie what happened. While at the bar, he meets an old woman who comes in begging. During the conversation he discovers that she is his mother, and he forces her to tell him who her betrayer was. A lost film.

During the 18th century, German noblewoman Sophia Frederica, who would later become Catherine the Great, travels to Moscow to marry the dimwitted Grand Duke Peter, the heir to the Russian throne. Their arranged marriage proves to be loveless, and Catherine takes many lovers, including the handsome Count Alexei, and bears a son. When the unstable Peter eventually ascends to the throne, Catherine plots to oust him from power.

Two Dartmouth football players fall in love with the same girl following college graduation.

Sailor Spike dates girls whose names he finds in an address book. Each girl has the same tatoo, placed there by another sailor Bill. When Spike meets Bill they become friends. In Calais Spike meets Goldie. Bill warns him against her, but Spike ignores the warning until he finds Bill's tatoo on Goldie as well.