Invention for Destruction

Vynález zkázy is a movie starring Lubor Tokos, Arnost Navrátil, and Miroslav Holub. An evil millionaire named Artigas plans to use a super-explosive device to conquer the world from his headquarters inside an enormous volcano.
As the world progresses into the industrial age, a professor studying the "nature of pure matter" is spirited away by a would-be dictator and connived into building a super-bomb, as a young reporter and a girl rescued from the sea attempt to warn him of their mutual kidnapper's intentions to dominate the world with a new and more-deadly-yet weapon.