Sophie est conviée à une fête à condition qu'elle accepte de ne pas venir avec son jumeau Alphonse. Charles-Edouard, lui, tente d'échapper à un examen physique.

Le grand-père accompagne la classe de Tommy lors de la visite du musée du corps humain.

Charlotte perd son emploi. Une fois à la maison, elle décide de s'occuper de sa fille Couette-Couette et de devenir une maman formidable…

Phil falls for the captain of the school soccer team. Meanwhile, Vice-Principal Pangborn asks Dil, Tommy, and Chuckie to hang around with his nephew, who turns out to be irritating and annoying.

Susie en a assez d'être considérée comme une “petite sainte” par les élèves populaires. Elle essaie désespérément de prouver qu'elle peut être une mauvaise fille. Pendant ce temps, Alphonse découvre qu'il a un talent pour la cuisine lorsqu'il est obligé de suivre un cours électif sur ce sujet.

Angelica's teacher is having a baby so she brings in a hot handsome substitute teacher that Angelica falls in love with. She tries to date him by failing her assignments. Meanwhile, Tommy, Phil, and Chuckie are part of the tennis club run by Pangborn. Chuckie is trying to avoid showering at the boys' locker room, but when he takes the chance, he realizes he has nothing to worry about.

Kimi leads a petition drive to ban cell phones in school. To prevent her from having the cell phones banned, Angelica hoodwinks Chuckie into helping her keep cell phones in school in her petition drive, while Susie helps Kimi counteract. Things get worse when during the debate at a school assembly, Chuckie reveals to the audience that Kimi wants a cell phone for Christmas, and they end up not speaking to each other and threatening not to attend their parents' (Kira and Chas) 10 year wedding anniversary. However, Angelica, Susie, and Tommy force them to attend to attend. At the Java Lava, Chuckie and Kimi argue with each other about cell phones until they make up after Tommy shows a video of their parents' wedding when they were babies.