A Pokemon world set 10 years after the Darkest Day in Galar. Leon remains undefeated as Monarch of the World Coronation Series but announces his retirement. An aspiring Alolan trainer who received a Charmander egg from Leon must rush to complete her journey - from zero badges through the Island Challenge to the World Coronation Series - all in one season before Leon retires. The world features all canon regions and characters, with themes of cultural differences between regional training styles, proving that Alolan trainers can compete globally, and the race against time to keep a promise.