The "dead" superheroes are now agents of the Time Trapper, who has summoned them from the past and brainwashed them into working for him.
Following the ambush, the agents successfully kidnap the comatose Jaxon Rugarth (formerly Legion enemy "The Infinite Man").
The player characters determine that the Time Trapper is trying to turn Rugarth back into The Infinite Man, and must act to stop him.
Pawns of Time, Book 1 of the Chessman series, was released the following year, a 32-page softcover book written by Steve Crow and Chris Mortika, with cartography by James Clouse, and cover art by Ed Hannigan (layout), Curt Swan (pencils), Bob Smith (inks), and Gene D'Angelo (colors).
[2] Three more books in the Chessman series were published in 1987: Knight to Planet 3, Mad Rook's Gambit, and King for All Time.