In a universe full of aliens, only one racer can be the best. Only one can win the greatest race in the entire galaxy, the Redline. This year’s Redline will be especially dangerous, as it will take place on the planet Roboworld with its trigger-happy military and criminals who look to turn the race to their own advantage.
Hyoutei Gakuen's strange (but impossibly wealthy) captain Atobe Keigo decides to throw a giant birthday party for his friend and teammate Kabaji. He invites the rest of the Prince of Tennis cast. Together they participate in many different sports and events: dancing, swimming, soccer, a relay race, and more.