From the introduction:
The Net Book of Plots is a collection of adventure ideas. These ideas are classified by length, genre, type, and setting to make it easier to find the right plot for your game.
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These lists can be used for a variety of role playing games.
User summary:
The Net Book of Plots is published as six separate ASCII files (Volume 1 - Volume 6), or as The Complete Edition of the Net Books of Plots, a compiled ASCII version with all six volumes. Additionally, the complete product is available as HTML in both a downloadable version and an online version. The online version supports useful indexing options.
Although the plots presented are generic and universal, many of them have a heavy fantasy genre component and many are obviously intended for Advanced Dungeons & Dragons (2nd Edition).