Code Name Diamond Head is a 1977
Made-for-TV Movie from Quinn Martin's company.
It was intended to be the pilot for a series, but the movie failed at convincing the network executives it was worth a series.
The plot, as such, concerns an evil traitor spy who plans to steal a biological nerve agent from the Navy and sell it for 100,000 dollars. It's up to the eponymous agent Diamond Head (so named for the actual place in
Hawaii) to stop this evil spy.
For tropes and specifics relating to the
Mystery Science Theater 3000 version, please check out the
episode recap.