Synopsis

The Joker has returned to Gotham City, his ambitions now reaching for global control. He begins by seeding rumors of an impending alien invasion, then turns his attention to acquiring beryllium – the metal necessary to construct a genuine flying saucer. Batman detects this elaborate plot and dispatches Alfred to investigate a known cache of the material. However, Alfred is seized by the Joker’s men and mistaken for a brilliant but unstable scientist, and taken to the villain's hidden headquarter