The Champion Games

(Notice: This is a cross-over of Hunger Games and League of Legends.)
Ten champions are selected at ransom to fight each other in two teams of five. The objective is to attack and push the enemy back to their base that holds four inhibitors in which are supposed to be destroyed by the opposing team. After one team has successfully destroyed the main enemy inhibitor, the winning team advances to the next stage of opponents, and the team that lost will be sent home without fortune. The very first Champion Games is about to start, all champions in the thirteen districts will be sent to the first Champion Games as it is mandatory, but aren't mandatory for the future tournaments. The games last over four days and are every five years, one time in their life can they win the fortune, but they can join the future tournaments. The winning team soon realizes that they shouldn't be about the fortune, and keeping it for themselves, they should be about teamwork and donating the fortune to the public. Who will win the games and who will be sent back to their districts without fortune?