As long as you have courage, you can change the future!
The movie starts with the first years of Endou Mamoru in Raimon. It shows what happened during the Football Frontier at the first half of the movie, until they end up having a match with the Ogre. With most of the members injured, they almost lost hope, until Kanon introduces himself as Endou Mamoru's great grandson and other friends from the near future (Fubuki, Toramaru, Hiroto, Tobitaka , and Fidio) showed and helped them. With the added strength and after a great match they are able to defeat Team Ogre.