Synopsis
As the cartoon begins, Thomas (as Sylvester is called in this film) captures Tweety, whom he finds cold outside in the snow. The cat's mistress, an unseen owner, saves the bird from being eaten by the cat, whom she promptly reprimands. Tweety is brought inside, and the mistress warns Thomas not to bother the bird. Ignoring this command, Thomas initiates a series of failed attempts to get Tweety from his cage, each ending in a noisy crash bringing the lady of the house to whack Thomas with a broom, and then finally, throw him out.
The cat tries to get back into the house through the chimney. Tweety puts wood in the fireplace, pours gasoline on it and lights it. The phoom sends Thomas flying right back up the chimney and into a bucket of frozen water.
However, Thomas gets back in the house via a window in the basement (or study) and creates a Rube Goldberg-esque trap (virtually identical to one in Chuck Jones' 1945 Porky Pig short Trap Happy Porky) to capture Tweety, which of course, backfires and injures him instead.
Finally, Thomas tries to capture Tweety by running up to the attic and sawing a hole around Tweety's cage, but he ends up causing the entire inner ceiling to collapse (sans Tweety's cage, which is being held in place by a beam). The faux pas creates such a racket that Thomas is sure the mistress will come downstairs and wallop him, and so, he takes her broom, breaks it in half, and tosses the pieces into the fire. This proves to be a bad move, as he finds himself being walloped on the head repeatedly with a shovel...by Tweety.
Read more about this topic: Tweetie Pie