he calles her trouble

A pampered dog named Trouble must learn to live in the real world while trying to escape from his former owner's greedy children and must learn how to survive on the big-city streets.

Danny, a ragamuffin orphan, is adopted by a brutal plumber and his frail wife. His fear of hunger, resulting from his foster father's indifference, at one point leads him to substitute for the plumber in repairing a leak, but he causes a flood. Later, Danny is instrumental in saving a policeman's life and in sending the plumber to jail. He finds new happiness with his foster mother on her parents' farm.