In 2016, a special two-hour remake was released to celebrate the series' 20th anniversary. It provides a much more detailed look at the events leading up to the transformation.

In the classic English dub (originally produced by Funimation ), the story begins with Jimmy Kudo (Shinichi Kudo), a brilliant high school detective.

After solving the case, Jimmy follows two suspicious men in black (later identified as Gin and Vodka). He is caught, knocked out, and forced to swallow a mysterious experimental drug. Instead of killing him, the drug shrinks his body to that of a seven-year-old.