Hit the Diamond synopsis from French website.
Steven and the Gems are amazed to see five Rubies, soldiers sent by
Yellow Diamond, leaving the ship-tracker. Garnet unfuses for Ruby to
infiltrate the group and discover what their real purpose is, but it
arouses the Ruby soldiers’ suspicions. To prevent them from searching
the premises and finding Peridot, Steven challenges them to a baseball
game: if they win, they will have the right to search, if they lose,
they will leave forever. This is a team of Steven, Pearl, Amethyst,
Sapphire and disguised-as-a-human Lapis, who faces the team of Rubies,
infiltrated by our Ruby…
