The insane outlaw superhero, Rorschach, discovers a murder victim was The Comedian, and proceeds to warn his colleague about a possible conspiracy to kill them as well.
While Rorschach faces deadly peril in prison, Dan and Laurie's decision to break him out to investigate his increasingly plausible conspiracy theory has terrible consequences.
As Doctor Manhattan brings Laurie to Mars to debate why he should return to Earth to save it, her personal memories and a shattering revelation from them play a critical role.
As Nite-Owl and Rorschach investigate the apparent conspiracy against them, their discovery of the prime suspect forces them on a possible one way journey to confront him.