In the beginning of the story Tom will not eat his salmon casserole. Billy said he would eat fifteen worms if somebody would give him 100 dollars. Allen said that he would bet Billy 50 dollars if he would eat 15 worms in 15 days.
Next Allen and Joe tricked Billy into going to a baseball game. They stuffed Billy with junk. Also Billy fell asleep in the car. He forgot about the bet and Billy does not think It is a trick.
Billy is in the middle of brushing his teeth when he remembers to eat the worm. So he gets a fog horn and wakes up Allen and Joe yelling to them that he is eating his worm and he did not forget. He did not have time to cook the worm so he ate it raw.
Another time, Billy gets mad because the worm is really big and figures that Allen and Joe glued 2 worms together to make them longer. At first he refuses to eat because he says they are cheating. They didn't count that worm and they found another one.
Billy gets sent to his room for eating too many worms. Tom's little brother sends up worm to Billy in a bucket. Tom distracts Billy's mother by talking to her. Billy eats last worm and wins the bet. The theme of the story is that if you work hard on something you will succeed.