Richard, a janitor at a bus station, helps a crying woman and her three children by buying them a ticket to New York. She claims to be fleeing an abusive husband. The next morning, Richard and his daughter, Amanda, find dozens of boxes left at their doorstep, along with a letter thanking him and encouraging him to sell the items.

While Amanda opens one of the boxes, she accidentally breaks a vase—revealing a real diamond hidden inside. Richard considers selling it, even visits an antique dealer named Mr. Lambert, who offers $10,000 despite valuing it at $100,000. Sensing something off, Richard refuses and goes home, only to discover Amanda has been kidnapped. A note demands the diamond in exchange for her life.

Tracing the address from the shipping label, Richard confronts the kidnapper, but the man claims Richard brought a fake diamond. Realizing Lambert must have switched it, Richard returns to the shop, confirms the deceit, and forces Lambert to confess that he and the kidnapper were in it together. The diamond, they reveal, was stolen from a billionaire and is being hunted by police.

Richard leaves Lambert tied up with a note for the authorities, then bluffs the kidnapper into leaving the house, claiming Lambert double-crossed them. While the kidnapper rushes to the shop, Richard rescues Amanda. The police, tipped off by Richard’s note, arrest both criminals.

Though Richard fears legal consequences for not turning in the diamond sooner, he’s just relieved his daughter is safe.