Runaway orphan from an orphanage traveling with his Cairn terrier. He tricks strangers into believing Mike Malone is his father to get a ride. After being recognized on a radio broadcast as missing, he ends up staying with Stevie and Mike, who eventually adopt him.
Their accidental journey develops into a permanent father-and-son family relationship.
The plot states that Mike eventually marries and adopts Tommy and his dog.
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