The Fifth Mind-leap

This is a story of two universes and six geniuses, five from our own universe. The strange reason why these made the mind-leap to genius is explored and our history has already highlighted the brilliant insights of two of these. Far into the future, however, the inevitable conflict of great minds looms as our fifth genius to have experienced the mind-leap finds that he is on a collision course with an intruder from a another universe. Which one will prevail?