I’m guessing it’s Vira. Kuma probably sent Bonney to a revolutionary stronghold.
this is probably an info dump arc. If there is a villain, I’m guessing it’s either weevil or the SSG. Maybe Zoro takes care of them.
it ends with Imu using Uranus to destroy vira, as it’s a revolutionary stronghold. However, Luffy will save the island, leading to the SHs are revos learning about Uranus.
Im guessing Luffy sees it via FS and then intercepts it via bajrang gun or something stronger. Maybe Luffy gets help from the other SHs to stop it.