The house goes crazy as Hal is falsely charged in a crime involving his company which he has nothing to do with. He is put in an ankle collar and is immobile, forcing the rest of the family, including Piama and Francis, to pick up the slack.
Everyone except Reese, who is missing after he discovers Malcolm with his girlfriend Beth. The family doesn't know, but Reese has joined the Army, where he doesn't exactly understand how the military works.
Dewey also has his own problems with the family as no one listens or even knows about him leaving for a music competition.
s05e01 - Vegas
s05e02 - Watching the Baby
s05e03 - Goodbye Kitty
s05e04 - Thanksgiving
s05e05 - Malcolm Films Reese
s05e06 - Malcolm's Job
s05e07 - Christmas Trees
s05e08 - Block Party
s05e09 - Dirty Magazine
s05e10 - Hot Tub
s05e11 - Ida's Boyfriend
s05e12 - Softball
s05e13 - Lois's Sister
s05e14 - Malcolm Dates a Family
s05e15 - Reese's Apartment
s05e16 - Malcolm Visits College
s05e17 - Polly in the Middle
s05e18 - Dewey's Special Class
s05e19 - Experiment
s05e20 - Victor's Other Family
s05e21 - Reese Joins The Army (1)
s05e22 - Reese Joins The Army (2)
Malcolm is a regular high school kid trying to navigate his way through life despite the various obstacles thrown in his way a complete misunderstanding of girls, the constant burden of masterminding plans to get himself and his brothers into or out of trouble, and a miserable job at the Lucky Aide not to mention a severe case of teen angst.
Although Malcolm has a genius IQ, he can't seem to make sense of the opposite sex, much less his embarrassing family. Lois is the outspoken, opinionated mom, who still manages to rule the roost even though her boys are growing wise to her crafty ways. Hal, a dad who is just a bumbling, big kid at heart, often finds himself creating more chaos than his five boys combined.