There’s a rumor that a dinosaur named “Gossie†has showed up in Goha City. This rumor excites Yuga and Luke’s spirit of adventure. The two of them start searching for this dinosaur, and run into Hakubutsu Kan, a student from Goha Second Elementary School who thinks that Gossie is actually a Rush Duel Dinosaur. As Yuga and Luke search around the city together with Kan and his friends, they realize that Kan is looking for Gossie not just because of his interest in the dinosaur. He also has another goal in mind…