All the children go on a picnic except Sid, who has a cold, and Huck. Tom and Becky get lost while exploring a cave. Trying to find the way out, Tom sees Indian Joe coming in. Huck discovers Joe's friend, killed.

Tom and Huck discover that Mr. Dobbins wears a wig. On the last day of school, when the teacher whips every student, even girls, for sleeping during class, Tom hits on a capital idea for revenge.

Tom and Huck suffer from their guilty consciences and decide to tell the truth. Indian Joe comes to the trial with confidence, but his plan is foiled by Tom's testimony. Joe takes flight and Muff is declared not guilty. Tom is again the children's hero.

Mary begins working for Dr. Mitchell, training to be a nurse. A balloon descends in the village, and the people panic, thinking it is a monster. Tom, who knows what it is, lends a hand to Arthur the pilot.

On their way to a haunted house in the middle of the night, Tom and Huck witness a murder. Indian Joe kills Dr. Robinson, then lays the blame on Muff Potter. Tom and Huck exchange a promise to keep their secret, because they fear Indian Joe.

A search party forms to find Tom and Becky. Indian Joe comes upon Tom and scares him, but does no harm. Pursued by the sheriff, Joe falls into a gorge and meets his end. Tom, to his surprise, feels sorry for Joe. Later, Tom and Huck find gold coins.

Ben and Huck miss the village, so Tom proposes that they return on the very day of their funeral. No other village children, Tom decides, have ever become the center of so much attention.

Tom discovers a dead body up the river - it appears to be Huck's father! After the funeral, Huck's father appears alive; come to take his son. Huck doesn't want to go, and hides.

Muff is arrested for the murder, just as Indian Joe planned. Tom and Huck sympathize with Muff and send in food and cigarettes, but keep their silence. Tom is plagued by nightmares.

Huck is offended that Tom forgot his promise. The next few days Tom works with Huck, telling Becky he is busy helping his sick aunt. Becky discovers his lie but her anger is replaced with surprise when she sees Huck's newly built tree house.

Sid comes down with the mumps just as summer vacation starts. Tom doesn't want to get sick and spoil his holiday. Just then two men come to town with Water of Life, guaranteed to cure every disease.

Tom goes fishing with Huck and Becky. They catch a big one, but only after Becky jumps in to lend a hand.

Tom and Huck reach Aunt Sally's ranch safely and hand over the papers. Tom introduces Huck as his brother Sid. While out riding, they spy a white horse.

The judge divides the gold between Tom and Huck. Mrs. Douglas is chosen as Huck's guardian, and he begins a new life under strict discipline. A new school year begins, and Huck attends with Tom. On day one, the two are in trouble with the new teacher.

Tom tries to arouse Becky's interest at Sunday School, but is ignored. That night Old Sam shows him a special charm to make wishes come true.

Tom just can't get along with his new classmate Alfred, and challenges him to a fighting match. On the way home, the boat they are aboard sinks and Tom rescues Alfred, who can't swim at all - winning Becky's praise.

A large steamship comes to St Petersburg. Tom and Huck steal aboard for a trip. Next day, Tom boasts about their adventure, fascinating his classmates.

The villagers believe the boys have drowned in the river. Though they play all day on the island, Ben misses his home. Tom returns secretly for news of the village and sees Aunt Polly praying for his safety.

Tom sneaks out to go to the haunted house with Huck. There they learn that Indian Joe has come back to the village in disguise. By chance, Joe and his friend find a box of gold coins. Tom informs the sheriff, but is not believed.

Frog leaping matches are popular with the school students, and Tom trains his frog to be a great leaper. Charlie doesn't want to hand over his championship, so he stuffs Tom's frog with pebbles.

Tom promises to take Huck to the play. To earn the money he works for his aunt, moving furniture to a friend's ranch quite a distance away. When a wheel comes off the cart, Tom is almost defeated - but manages to run home just in time for the play.

Huck prepares a delicious meal for Lizette's next visit. Suddenly two of the troupers desert, and the group must leave, unable to continue the show. Lizette tells Tom she will be back someday to see Huck.

On the anniversary of Huck's mother's death, he wants to light a candle in her memory. Though he knows Aunt Polly won't allow it, Tom promises to bring Huck her silver candlestick. Then, with the help of Mary and Sid, he tricks his Aunt.

Morris, Jim's friend, runs away from his master. He wants to go north where slaves can be free. Tom makes a raft and helps him leave the village.

Tom is dismayed when Aunt Polly tells him he must spend his Saturday whitewashing the fence. Too long to paint in one day, Tom convinces his friends of the joys of the job, and soon has all the help he needs.