Dobie and Maynard conspire to rig the raffle at the local movie theatre so that Dobie can win enough money to take Thalia to the prom.

Dobie competes with Milton Armitage to see whose wardrobe can impress Thalia the most.

Thalia urges Dobie to become a doctor, but he meets Zelda Gilroy and learns about the scientific concept of propinquity, the psychological tendency for people to form relationships with those whom they encounter often.

After a throat operation, Dobie can sing better than Milton, thus attracting Thalia.

Herbert seeks free advice from a child psychiologist.

Mr. and Mrs. Gillis take in a young and handsome border from South America.

Dobie runs against Milton for junior class president. Thalia is Dobie's campaign manager.

Dobie becomes Top Fist by knocking out the legendary Moose. Milton tries to gain the title and Thaila's affections by challenging Dobie.

Dobie goes on a hunger strike until Thalia agrees to be his.

Thalia talks Dobie's parents into sending him to Willoughby prep school.

In order to win Thaila from Chatsworth, Dobie reads a book on mental power so he can be the dominating man Thalia wants.

Thalia tries to educate Dobie in logical thinking.

Dobie, Maynard, and Thalia capture a crooked dry-cleaner who had almost conned them before.

Thalia hatches a scheme for Dobie to sell sandwiches at the school picnic.

When Dobie wants to join an exclusive fraternity, Mr. Gillis bribes members to accept him.

Dobie names Thaila as his beneficiary on a life insurance policy, then becomes paranoid that she and Maynard are trying to kill him.