A massive flyweight battle takes place in the main event. After winning the grueling ONE Flyweight World Grand Prix, 12-time UFC World Champion Demetrious Johnson can cement his legacy as the greatest mixed martial artist of all time if he dethrones six-time ONE Flyweight World Champion Adriano Moraes, who promises to be the first man to finish "Mighty Mouse."Plus, four-time UFC and Bellator World Champion Eddie Alvarez battles to prove he belongs in the promotion after a rough start to his ONE Championship career, but standing in his way is dangerous #2 lightweight contender Iuri Lapicus.