

The boys go back in time to 1877 when the Brooklyn Bridge is being constructed. They discover that they are trapped on top of the bridge.
Joe's uncle gives him a mysterious book for his birthday, but when his friend Fred wishes for buried treasure while looking through the book, Joe, Sam and Fred suddenly find themselves transported back through time to the year 1718 on a pirate ship captained by the infamous Blackbeard.
The boys are accidentally transported to the year 2105 when the boys are on a class trip to the Natural History Museum to learn about the inventions of the past. While there, they meet their great-granddaughters and get attacked by robots with ray guns.