Based on the manga by Urasawa Naoki.Hiraga-Keaton Taichi is a half-British half-Japanese dreamer whose dream is to dig up an ancient civilization on the Danube River. But after his marriage failed, he also lost confidence in his dream. He joined the SAS army but he couldn't give up his archaeological desire. So he became an op (operative) in order to finance his future private excavation of the secret civilization and now goes around the world as an insurance investigator for Lloyd's of London.Note: When Master Keaton TV was released on VHS/DVD, a special episode was included on each media. The episodes were numbered from 25 to 39.