Olivia competes in the famous Sand Dune Race in a new electric 4x4 she has designed, but her co-pilot has just pulled out. Fortunately, Grisù will take his place. Accompanied by Fumé and Stella, he joins Olivia in the desert. The race begins and soon Slad and Vlad - better known as “The Tricktwins” - give them a hard time. The twins, ready to do anything to win, try to trick them. While Grisù and Olivia's charred windsceen prevents them from moving forward, Grisù has an idea that allows them to get back in the race. Before crossing the finish line, they even help the Tricktwins to get out of a quicksand.
