Broke, Hal and Lois decide that all the Christmas gifts must be homemade. When Hal realizes Lois and the boys have made bigger and better gifts, he fibs about the fabulous present he has in store for them and takes the family on a wild goose chase. Meanwhile, Malcolm feels like his brothers are alienating him and Francis returns home with startling news.
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.