Pokémon Masters EX has launched the Treasures of Ruin—Lysandre Story Event, with the latest chapter running from Oct. 6 at 11 p.m. PT through Oct. 31 at 10:59 p.m. PT. The event continues the Treasures of Ruin storyline and sets up a clash between Lysandre and Ghetsis as their villainous ambitions collide, with players able to participate in the story event and earn rewards. A new trailer released Oct. 7 teases the confrontation and asks which of the two villains will ultimately prevail, adding another chapter to the ongoing Pokémon Masters EX storyline.
Source: Official Pokémon Masters EX site
