Malcolm gets his tongue pierced and needs to hide it for a month. While Lois' mother, Ida, comes and annouces that she will marry a rich Chinese Man that she met on a cruise. Malcolm gets complications when his tongue ring gets infected, rendering him unable to say "S's" and he discovers that Ida has been drugging her fiancé with opiates and mood enhancers. When Lois and Hal confront Ida, she drugs them with free food. But luckily, the fiancé misses a drug treatment, and realizes that Ida is a terrible woman and he leaves her at the altar. Malcolm is punished for his tongue piercing. Meanwhile at the ranch, Otto decides to hire a murder mystery acting troup, but it all turns out badly.
Elenco: Bryan Cranston , Justin Berfield , Erik Per Sullivan , Jane Kaczmarek , Christopher Masterson , Frankie Muniz , Craig Lamar Traylor , David Anthony Higgins , Emy Coligado , Eric Nenninger , Kenneth Mars , Evan Matthew Cohen , Kyle Sullivan , Gary Anthony Williams , Jennette McCurdy , Emma Stone , Cloris Leachman , James Rodriguez , Lukas Rodriguez .