BRAND NEW STORY: "The Challenge!" Betty and Veronica are FlipFlop famous for their dance challenge videos! When they find out that their favorite band BTX is holding a contest to perform at the hometown of the winner of the best dance challenge video, Betty and Veronica are ready to make the best viral video out there-but when everyone in Riverdale gets in on the action, especially prankster Reggie Mantle, will Riverdale win, or will it be one big flop? Find out in this brand new, double-length lead story from the creative team that brought you BETTY & VERONICA: THE BOND OF FRIENDSHIP!