Release Message:  Professor Bullfinch invents a time machine which takes Danny and his friends back to the time of Benjamin Franklin, and they must discover how to get back home again. Co-written by Raymond Abrashkin.

Description:  Three teenagers use their professor's time machine to study the history of the US. Professor Bullfinch's experiment with a time travel invention is being secretly observed by Danny, Joe, and Irene. The youngsters are startled by the appearance of a second Joe. During the following confusion, the time travel device transports them all into the past. Aided by Benjamin Franklin, the Professor works to return them to their present. While in the past, the youngsters explore the society of American life under British rule, only to find one of their number in danger of being marooned in the past.