The world of ONE PIECE has many mysteries. One of these are undoubtedly the three Ancestral Weapons, three powers of ancient times that can shape the whole world, depending on the hands they end up in. Poseidon, Uranus and Pluton, these are the names of such weapons that have yet to be adequately discovered by readers.
Surely ONE PIECE will investigate the issue in the future, and one of these could be the subject of the next phase. If we already know several things about Poseidon, including who he is, for Pluton, on the other hand, we know relatively little. This Ancestral Weapon is a battleship used in ancient times that appears to be huge, judging by how Franky and Iceburg have reacted to the designs.
After all, very little is known, except that it was built during the Void Century at Water Seven and that it was kept in a secret place during the following centuries. As explained by the Poneglyph of Alabasta, that place is Wano, that is the island where the protagonists are now located. It is therefore possible that within a very few chapters the Mugiwara will come into contact with their second ancestral weapon, which they will be able to control for a war against the navy and the World Government.
What capabilities will this weapon of mass destruction have? Meanwhile, Poseidon could also bring destruction in ONE PIECE.