Malcolm and Reese spend the day fighting at a water park; Francis gets into a different kind of pool match with Spangler; and Dewey stays home with an odd babysitter.

When Lois gets sick, Malcolm and his brothers convince her it's Sunday so they can stay home from school...while Hal heeds the Siren song of a Porsche dealership.

While Lois is out of town visiting Francis after his appendectomy, Malcolm and his friends build a robot, but Hal reverts to his pre-marriage wild-man persona and takes over the project.

Malcolm suffers under his father's roller skating tutelage, while Lois is sidelined with a nasty back injury.

Malcolm helps Reese become a male cheerleader to attract a girl; Francis has a heart-to-heart conversation with headmaster Spangler; Dewey is enticed by a new toy.

Malcolm talks the family out of going to a relative's funeral, so he can go on his first date instead.

While Hal secretly takes the boys to the stock car races, Lois desperately searches for her missing paycheck.

The family suffers in poverty after Lois gets fired from the grocery store; Francis loves his new assignment as part of an honor guard at a beauty pageant.

The whole family attend a Krelboyne family picnic, and Malcom dreads his performance in the event's "Academic Circus" will make him look like a freak.

Malcolm's brother, Francis, runs away from military school and comes home to see his girlfriend.

During a sleepover, Malcolm sneaks Stevie out of the Kenarin house and loses his wheelchair; Francis deals with hazing at military school; and Reese tries to prove he's man enough to watch a scary movie

While his family is reduced to living in a trailer in their driveway while their house is fumigated, Malcolm luxuriates while babysitting for what seems like the ideal family.

Malcolm feels guilty after beating up a seven year old; Hal takes heat after cutting down a tree; Francis tries to sabotage Spangler's sex education lecture.

Lois and Hal leave the boys alone for the weekend with Francis, promising that if all goes well, Francis may not have to go back to military school.

Lois must take drastic steps to discover which of her sons ruined the special dress she bought for an anniversary dinner with Hal.

Malcolm finds his life as the middle brother in an eccentric family made even more difficult by his being placed in a class for "gifted" students at school.