Mr. Whittaker uses the Imagination Station to transport cousins Patrick and Beth to the Holy Land in 1000 B.C., where Hugh is trying to change history by helping the Philistines defeat the Israelites.

While searching for Eugene, who is missing somewhere in time, time-travelling cousins Patick and Beth arrive on an orphan train heading west in 1874 and befriend an orphan falsely accused of being part of a train robbery.

"Travel two centuries back in time to the final battle of the American Revolution at Yorktown, Virginia. Cousins Patrick and Beth sneak through trenches and race across battlefields to warn General George Washington about a dangerous spy. The spy is stealing his secret plans and giving them to the British. Cannons roar and the ground shakes as the struggle reaches a climax. Washingtons ragtag soldiers are up against the most powerful army in the world....

When time-traveling cousins Patrick and Beth use the Imagination Station to go to Plymouth Colony in 1621 hoping to find Hugh and return him to his own time, they meet William Bradford, Myles Standish, and Squanto.

Eight-year-old cousins Patrick and Beth find themselves 1450's England during the War of the Roses, where they discover the missing treasures and meet the person who has been sending notes through the Imagination Station.

Cousins Patrick and Beth travel in Mr. Whittaker's invention, the Imagination Station, to thirteenth-century China, where they meet Marco Polo and Kublai Khan and are mistaken for Christian shamans.