Arnold and Sam encounter a supposed ghost.
Arnold plans to wreck Lisa's science project.
Willis helps a police anti-drug operation.
Arnold strikes against unfair school rules.
Sam's father (Hoyt Axton) comes seeking custody.
An Italian student takes on a school bully.
Arnold and Sam become business competitors.
Arnold becomes judge of the school court.
Drummond plans a surprise for a paraplegic boy.
Arnold is forced to look to Carmella for help.
Sam asks Drummond to coach his baseball team.
Arnold works to save TV idol Sandy Squirrel.
Sam takes on an irascible senior citizen.
The boys want to change their name to Drummond.
Sam's new buddy is a girl (Soleil Moon Frye).
Arnold's rocket lands atop the Soviet Embassy.
Arnold tries to stop a friend from drinking.
Sam's father invites himself on a camping trip.
Arnold's pals disapprove of a girl he likes.
Drummond secretly works in one of his factories.
Arnold seeks protection after being mugged.
Arnold and Sam befriend an epileptic performer.
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