Synopsis: In the future, the heroes of the Marvel Universe have been hunted down and either imprisoned or slaughtered. The remaining free heroes make a desparate attempt to prevent their future from happening by sending one of their own back in time to prevent an assassination of a US Senator. Unfortunately for the X-Men, the forces in both the future and the present seem to be working against them!
"Once again, Wolverine finds his dreams haunted by the being called Nightmare. This time, however, Nightmare has stepped out of his realm to attack Logan on a separate plain, where he has a nasty surprise for our hero..." (synopsis from front of book)