Duffy's Time Travel Mission is the latest adventure for Duffy and his friends.
This year Duffy has moved into a new neighbourhood next to a rather rowdy neighbour who loves to play Elvis very loud and very late. Duffy goes to investigate and ends up befriending Ruby, an 80 year old lady who is illiterate. When Duffy learns that Ruby can't read because she never went to school, he builds a time machine so he can go back in time to the source of the problem. Ruby's dad died in WWII and Ruby had to stay home to help her mother run the farm. Duffy has to do his best to keep Ruby's dad out of harms way and make sure he returns home and Ruby gets all the opportunities that we are afforded today. Through Duffy's trip we meet ninja's in ancient Japan as well as Duffy himself as a famous writer!