The time detectives had to go back in the year 2000, where they have to find the group of Time Shifters named The Cardians. But upon reaching the timeline, Sara and Tony surprised that the time they've gone to is the time when their uncle Dr. Goodman is a teenager and likes to smoke a lot and that explains why he doesn't have a girlfriend up to now. While witnessing the heroic deeds of the Cardians, Flint also must deal with Petra Fina when she takes control of the Cardians. After being freed by Flint, the Cardians form Cardian-Master to fight with the cat form of Petra Fina's Catamaran.