Spider-Man and Wolverine, fellow Avengers who can't stand each other, are lost in time...and time is running out. Millions of years in the past, they are threatened by the asteroid that killed the dinosaurs. They must seek salvation in an unpredictable journey through history that will take them to the end of the world... and beyond. But if they want to find out who is hiding behind everything and return to their own era, they will have to learn to cooperate. Can Spidey and Wolvie keep from killing each other long enough to find out who the main villain is pulling the strings? In other words, they will most likely die.