Kayla and Daniel time travel back to when Dr. Martin Luther King Jr. was a kid and become heroes! Students in Mrs. Robinson's 3rd grade classroom have their fair share of ups and down. As twins, Kayla and Daniel always find themselves in the middle of trouble. The class clowns Cody and Miles make life hard for Kayla and Daniel. But soon, the twins will be up against the biggest challenge ever! As their late grandfather's inventions arrive to their...