Steamboy

During the birth of the steam age, a young inventor must avoid letting his grandfather's invention, a powerful new source of energy, from falling into the wrong hands.

The story follows three generations of a British family involved in a technological breakthrough involving steam, which the movie considers the 19th-century equivalent of nuclear power.

...denuded of any cyberpunk philosophizing, the film aspires to and achieves a dazzlingly straightforward rush that finds its protagonist in astonishing action set-piece after set-piece.