In The substitute a boring day at school will suddenly turn into a spectacular day that will never be forgotten.
At several high schools throughout the country, classes will take a highly unexpected turn when the substitute teacher turns out to not be a teacher at all, but a gameshow host. The students are not the audience but are able to battle for a spot in the finale. This bizarre gameshow is all about what the students have learned about school subjects and everyday fun facts. They will compete for a cash prize.