Danny, Irene, Joe, and Professor Bullfinch launch themselves on an amazing journey -- through time! They land in the year 1763 and one of the first people they meet is Benjamin Franklin. The Professor plans to return soon to the future, but when he throws the switch, the time machine won't start. While he and Mr. Franklin try to repair it, Danny and his friends explore the colonial era -- and Joe is kidnapped by an angry innkeeper who mistakes them for a runaway. Can the Professor get them back to their own time before more disasters happen?

Danny Dunn, Time Traveler is the eighth novel in the Danny Dunn series of juvenile science fiction/adventure books written by Raymond Abrashkin and Jay Williams.