When Kate attempts to break Pete's birthday curse and help him have a fun birthday, the curse proves to be more powerful than she anticipates. Meanwhile, Diane and Jackie shop together for Pete's birthday gift and the kids are at home with lobsters that refuse to be a main course.

When Bert loses a tooth and Pete misplaces it, his solution causes big problems with Jackie. Meanwhile, Kate channels her maternal nature and advises Warren during his first study date, and Diane helps Hillary host her first high school sleepover, which leaves Hillary feeling embarrassed.