When Hal and Lois go out of town for a "last chance" getaway before the baby comes, Reese has a big bash that gets out of hand. College-age thugs show up, cancel the party and set up a drug-making operation in the garage. All Reese and Malcolm can do is knuckle under. The good news is, Dewey's not around. The bad news is, his baby sitter is Lois's annoying co-worker Craig (David Anthony Higgins). Meanwhile, Hal and his very pregnant wife are off at a romantic retreat - feuding.
s04e01 - Zoo
s04e02 - Humilithon
s04e03 - Family Reunion
s04e04 - Stupid Girl
s04e05 - Forwards Backwards
s04e06 - Forbidden Girlfriend
s04e07 - Malcolm Holds His Tongue
s04e08 - Boys at the Ranch
s04e09 - Grandma Sues
s04e10 - If Boys Were Girls
s04e11 - Long Drive
s04e12 - Kicked Out
s04e13 - Stereo Store
s04e14 - Hal's Friend
s04e15 - Garage Sale
s04e16 - Academic Octathalon
s04e17 - Clip Show #2
s04e18 - Reese's Party
s04e19 - Future Malcolm
s04e20 - Baby (1)
s04e21 - Baby (2)
s04e22 - Day Care
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.