Muffy and Francine were best friends since second grade, when Muffy was a new student. This episode is a flashback from that time. This particular memory is when Muffy and Francine decide to study together for an upcoming math test, but Muffy continually procrastinates, claiming that she knows her addition and subtraction. When the test day comes, Muffy cheats off of Francine's test and claims that she would never cheat, getting Francine into trouble which almost costs her her friendship with Francine. Francine is punished and has to stay after school, but she is needed to defeat Mighty Mountain in a softball game. Muffy tells the truth and it gets Francine out of trouble and the girls become friends.