Ishii Hisaichi no Nanda Kanda Gekijou
Genres: Comedy, Sci-Fi
Type: OVA, Episodes: 2
Aired: Jul 25, 1989 to Nov 25, 1989
Source: Unknown
Rating: PG - Children
Synopsis:
The Underground People desire to leave their overcrowded cavern and seize control of the surface world, but they never quite succeed. A second episode, Christmas Aid, soon followed, in which the brainless Undergrounders' second futile escape attempt is set to music by the popular group Yukadan. The first volume also included two unrelated stories by Ishii: 101 Ninja and Ken-chan's Space Exploration Adventure.

(Source: The Anime Encyclopedia)