When Sid, his annoying third-grade classmate, ruins Song Lee's origami praying mantis, Horrible Harry plots triple revenge on the troublemaker.

Horrible Harry of classroom 2B cuts back on his mischievous pranks after falling for Song Lee.

Horrible Harry falls in love with Song Lee, and Harry's best friend, Doug, can't stand all that mush.

The students in Miss Mackle's third-grade class enjoy a day of Halloween surprises, including Harry's unusual costume.

It's almost summer vacation and the students in room 2B are having trouble concentrating on their butterfly project, until a new teacher comes to supervise the Suspension Room and Harry is sent there as punishment for unruly behavior.

Horrible Harry and friends start off third grade with a new room and a field trip to an old copper mine to study rocks.

When Song Lee's hampster escapes from its cage in Room 2B, the class members and other students in South School become involved in the search for him.

Working on a dragon project in Room 3B leads to a war between two good friends--Harry and Song Lee.

When Horrible Harry's pet cat, Googer, sneaks a ride and gets into the school building, third-graders Harry and Doug have to catch him before anyone else does, which means going into some forbidden places.

"When Harry and his pals in Room 3B aren't invited to their teacher's wedding, they invite themselves, and wind up saving the day"--