
The incredible journey of a microscopic crew inside a dying man’s body. The team aims to destroy a blood clot in the man’s brain using a miniaturized submarine.
That novelization differs significantly from the movie, but mostly because Asimov thought the screenplay was filled with bad sci-fi plot-holes and was given permission to change whatever he liked.
The point is that calling any food product "alimentary paste" is hilariously unappetizing.
