A kid with nothing but a dog and a photograph hunts the ghost ship that murdered his family, and the film doesn't care if you follow the logic. 1969 animation that moves like it cost twice what it did, built around setpieces so overscaled and specific, laser-equipped battleships, underground factories, kaiju confrontations, that you know nobody's making this exact thing now. The revenge plot dissolves into something stranger: environmental catastrophe, corporate conspiracy, a found family held together by a dog that matters more than the plot ever will.
Hayato's world crumbles when a colossal robot levels his city, killing everyone he loves. Orphaned and alone except for his faithful dog Jack, he clings to two mysteries: his mother's shoe and a photograph of strangers his dying father claims are his true parents. Rage consumes him as rumors finger the Ghost Ship, a legendary vessel that haunts the seas, as the force behind the destruction. When Hayato uncovers an underground factory hidden beneath the city, he discovers the truth is far more sinister than anyone suspects. The respected businessman who controls everything has lied to the population. Beneath the ocean waves, something far darker waits in a submerged castle, orchestrating destruction from the shadows. Now Hayato faces an impossible choice: expose the conspiracy and risk his own life, or stay silent while those responsible remain in power. Every truth he unearths makes him a target, forcing him deeper into danger as he fights to reveal what the powerful want kept hidden.