Satoshi and friends are approaching Smillville, where competitions in the Kalos Region's beloved sport "Sihorn racing" are being held. After Junsa tells him that today's race is open to everyone, Satoshi decides to participate as well. And since her mother is a Sihorn racer, Serena takes on the role as Satoshi's coach. Having learned how to ride, Satoshi is finally ready for the race. But due to the Rocket Gang laying a trap in the middle of the course, the race ends up becoming a mess.