As Mustachio and Kenichi make their way through the hustle and bustle of Tokyo, they overhear a muffled scream from a parcel carried by an old man. Ever the curious type, Private Detective Mustachio follows the old man to his home, finding out that he is a scientist, Professor Yamadano.

When confronting Yamadano over the package and his intentions, Yamadano breaks his silence and reveals the discovery he made during a visit to Horseshoe Island. A discovery that has very grim implications...

The final installment in Tezuka's SF "World Trilogy" filled with Conspiracy, Political Turmoil, and Hardship.

Volumes 45 and 46 of the Osamu Tezuka Complete Works