Mystery Girl: After Clarence and pals call random numbers as a prank, Clarence ends up connecting with a girl and they strike up a friendship. But will this long distance phone pal last? / The Substitute: After Ms. Baker takes an unexpected personal day, she is replaced by a substitute that has a hard time handling the unruly classroom. Soon, the school day devolves into chaos and it is up to Clarence to get Mrs. Baker back to where she belongs, the classroom.