After becoming Champion, completing the Z-A challenge, and training on the Isle of Armor… you’re quite an accomplished trainer! You and your Pokémon have been through a ton of tough battles.

You receive a special invitation one day via your Rotom Phone…

‘You’re specially invited to the GX World Tournament on Mastoria Island. The tournament begins next week, so be there soon :>’

A massive tournament of the World’s Strongest Trainers awaits…