Steele and Blunt, wanted by the police for a big jewel robbery, are arrested in a city railroad station. Before his apprehension, Blunt has just time to check a small black grip, containing the jewels, and hides the check under the molding of the counter with a piece of chewing gum. The grip remains in the check room unclaimed and is ultimately auctioned off at a sale of uncalled-for baggage. It is bought by Harry Graham, who opens it in the seclusion of his room and is amazed at the contents. His gift of a necklace to his sweetheart, Helen Grey, leads to big arrest, as Helen's mother recognizes the jewels, which have been stolen from her. Feeling confident that Harry is guilty, the authorities release Steele and Blunt. The thieves recover the hidden check and trace the grip to the auction room, where the purchaser's name and address is given them. Helen secures the aid of detective Brinton to prove Harry's innocence. Brinton lays a trap for the thieves, into which they are carried. Their guilt is clearly established and Harry is exonerated.
—Moving Picture World synopsis