The invisible boy Chip intends to enter his invisible dog Max in the dog show, but when Max goes missing, Chip and his Invisible Inc. friends suspect foul play.

When the Invisible Inc gang makes computer greeting cards to raise money to invite an author to school, they solve the mystery of the author's real name.

Charlene's story is voted best in the class, but when she goes to read it at Parent's Night, it has vanished from her folder.