The cartoon's story (which is essentially a re-working of Bob Clampett's 1941 short Porky's Pooch) is about a dog named Rags McMutt, who has just escaped from the dog pound and accidentally meets Charlie, an old friend of his in a car he used as a hiding place. Charlie tells Rags about the troubles he has had finding a new master (Porky Pig), and keeping him after that. In the end of the film, Porky throws both dogs out of his car and tells them he doesn't want a dog. When Rags sees how Charlie begs Porky to keep him as a pet, he decides to go back to the pound (even though he has a hard time getting back in) shouting while pounding at the door "Hey Let me in! Let me in! Open up! Let me in! Let me in!".
At one point of this cartoon makes subtle references to pregnancy; Just as Porky forces Charlie out of his apartment by the belly, Charlie begs not to be roughly handled "the way he is", whispers into his ear and makes a girlish wink in front of the camera. Porky, believing that the dog is female and is pregnant, takes him in, puts him into bed and feeds him with some milk and broth. As Charlie's name gets revealed, Porky realizes that he has been fooled and gets enraged, resulting him to throw Charlie out of his apartment by slamming the bed through the wall, since "Charlie" is commonly a male name (very often, "Charlie" is a short-form of the name Charles) and male dogs do not get pregnant.
While the USA Turner 1995 dubbed version retains the original 1946-1955 Looney Tunes ending music cue, the EU Turner 1995 dubbed version in English Audio Track (according to the Boomerang CEE) replaces the original ending music cue with the 1941-1955 Merrie Melodies ending music cue. Other Dubbed Tracks like Polish, Hungarian, Romanian have the 1942 The Wacky Wabbit altered ending music cue.
This is the only Charlie Dog cartoon to have its copyrights sold to a.a.p.. The rest are in the post-1948 WB package.