In Part 1, a World War II veteran, Brooklyn-born Oscar Kilroy, takes up residence in a small town with Mr. and Mrs. Fuller, the parents of a fellow Marine. Oscar duly impresses the Fullers, especially their 12-year-old son Billy who prevails upon his new friend to help save the memorial cannon in the town square.
In Part 2, when Oscar Kilroy tries to help part-time inventor Harvey install a burglar system in the bank where Harvey works, they only succeed in trapping the bank president. Harvey loses his job, and town feeling is aroused against Oscar, causing an investigation into his war record. The truth about his war medals is soon learned and the town makes Kilroy an honorary citizen. Harvey, in the meantime, finds a better job.
In Part 3, public sentiment forces the mayor to give Oscar Kilroy a job, and the animal-loving ex-Marine is made dog-catcher. He bungles the job and is fired but asks for a chance to prove that he can do a good job. He intends to initiate a program for stray dogs in town.
A retired vuadevillian couple, Joe and Rose Kelsey, have a large farm on the edge of town and agree to house all the stray dogs that Kilroy can bring them. The Kelseys had a dog act in the old days and begin training the dogs to perform. An editorial appears in the local paper about the new program for stray dogs. The Kelsey Dog Show becomes a success, and Kilroy wins a position in the city administration. Less
In Part 1, a World War II veteran, Brooklyn-born Oscar Kilroy, takes up residence in a small town with Mr. and Mrs. Fuller, … More