Whit's End serves as a convenient stage for exploring truths that kids should learn.

On the eve of the American Revolution, Patrick and Beth travel back in time to deliver a letter to Paul Revere.

Penny and Wooton try to overcome questions from Penny's family before their marriage. Others in town are asking questions of their own: The Parker family wonders if Mom will ever learn how to ride a bike, Whit unexpectedly questions whether his daughter should move to town, and Emily wonders how an unknown hero is thwarting the robberies across town.

Blackgaard's Castle has opened and the kids in the town of Odyssey are enticed by free food, free games, and no rules. But why is Dr. Blackgaard spending so much time in the basement of the building? What secrets does it hold? Meanwhile, Richard Maxwell hacks into the computer at Whit's End with devastating results. He also deviously pressures Lucy to spy on Mr. Whittaker. Will Lucy betray Whit and her friends Connie and Eugene? How can Whit prevail...

The clock is ticking toward an explosive showdown as the crew from Whit's End race to solve a heart-pounding mystery in this special, six-part adventure.