Nellie has many suitors, but she yearns for a necklace. While strolling in the park a policeman becomes enraptured with her charms and gives her the desired necklace, but as Nellie will not satisfy the policeman by kissing him he wants his necklace back. Nellie returns the precious jewelry and Mr. Policeman finds a willing customer in the person of one Billie, a love-sick four-flusher, who is also enraptured with Nellie. Along comes "Long Arm Jim" and soon relieves Billie of his love token. Jim knows woman's weakness and succeeds in selling and reselling the necklace many times, each time extracting it from the purchaser. Billie is the first to discover the loss and is soon joined by the other victims. "Long Arm Jim" is finally captured and the necklace is returned to its original owner, the policeman. Billie, however, succeeds in getting it from the policeman and when he presents it to Nellie he wins her for life.
—Moving Picture World synopsis