The professor has had an accident with the time machine, changing him into a boy. Meanwhile, the evil oda Grim is hiding in the lab. Will she be discovered?

The professor is converted back to his normal age using the time machine. Is it truly repaired? Avery decides to write her school paper about Jesus.

The time machine and Robo are malfunctioning, Queen Josephine is missing, and oda Grim is scheming.

Professor repairs the machine and decides to test it. Will he eventually be able to send Queen Josephine back to her own time? Robo has continuing mechanical problems.

oda Grim disguises herself as an inspector and brings a shrink ray to the lab. Will her plan succeed? Avery learns about eternity, and makes an important decision.