In the Johto region, Ash Ketchum and his companions Misty and Brock prepare for the Silver Conference, unaware that their world is about to change forever. Suddenly, a mysterious, unbreakable light screen descends upon the entire globe, sealing the powers of legendary deities like Groudon, Kyogre, and Giratina. This celestial phenomenon broadcasts a 'Legendary Countdown' to every Trainer, revealing future events and hidden truths.

Only elite Trainers, Champions, and specific 'Chosen Ones' like Ash can interact with the screen via a global danmaku system. As regional Champions such as Cynthia, Lance, and Leon gather in this virtual chat room to debate the screen's origins, the first episode begins: a retrospective countdown of the strongest Trainer's journey to the peak. Witness the shock of the Pokemon world as they watch Ash's future victories, his rise to become one of the Eight Masters, and the epic battles that define his legacy, all while the present-day characters react in real-time to their destined glory.