Tezuka Osamu ga Kieta?! 20-seiki Saigo no Kaijiken
English title: Osamu Tezuka's Last Mystery of the 20th Century
Japanese title: 手塚治虫が消えた?! 20世紀最後の怪事件
Type: TV Special
Episodes: 1
Source: Unknown
Genres: Mystery
Producers: Tezuka Productions
Duration: 41 min
Rating: PG - Children

New Year's Eve 2000. An eternally juvenile Tezuka Osamu meets his creations for a New Year's Eve party at the Dr. Tenma's mansion, but before the event begins he suddenly disappears from his room in what looks like a kidnapping. A classic mystery setting for, at the end, a lovely homage to the man behind the genius.

(Source: AniDB)