Malcolm comes into his bedroom where Lois is going through the laundry and asks why he isn't wearing his underwear, Malcolm says he prefers boxers, and Lois reiterates that he thinks he needs extra room but he is getting way ahead of himself. Once she leaves Malcolm wishes he could have a childhood memory he doesn't have to repress.
In the kitchen, Hal is ironing and tells Lois he notices Dewey is getting too old for his teddy bear Domingo. Lois contemplates that he is growing up, and yanks Domingo away from Dewey.
Malcolm's class has a new student named Cynthia (Tania Raymonde), and Malcolm's friends tell him he doesn't need to worry about being the new kid anymore. It quickly becomes clear that she has a crush on him.
Francis calls his father and convinces him into lying about a father-son fishing trip to avoid punishment for taking a joyride in Commandant Spengler's car and crashing it. Hal is unconvinced and encourages him to face it like an adult.
Malcolm heads home late in fear after Cynthia follows him home, when he tells his mother, Lois assumes he likes her and understands what the underwear situation was really about. She invites Cynthia in for dinner that evening, and if Malcolm was more considerate he would've done it himself, Reese teases Malcolm by calling Cynthia as his girlfriend. Cynthia then thanks the chicken they are eating for giving it's own life for her to live, she tells Malcolm if she was killed and eaten she'd want to be thanked too.
Malcolm doesn't know how to react about this, panicking about a new love, and ends up throwing a brick through her window in the middle of the night. She is mad at first but ends up forgiving him.