A book that has an exciting introduction and a surprising ending would be the best story for me to read.

(Broken Link Removed)

Be sure to read the first sentence very carefully -- then read the rest. I think the problem in this sentence is with the linking verb (would be).

How can you fix it?

=)

I would re-write the sentence this way.

I would enjoy most a book with an exciting introduction and a surprising ending .

That way there is no repetition of "book/story" and everything modifies what it is nearest.