The Greatest Team-Up Stories Ever Told #[nn]

When three villains from Earth-1 and three from Earth-2 conspire to commit crimes and vanish across dimensions, the Justice League of America finds itself trapped in their own headquarters. In response, they call upon the Justice Society of America, swapping places to confront the threat—sending the older heroes into the modern era and the younger ones into the past to stop the interdimensional scheme.

When the Justice League of America and the Justice Society of America find themselves battling their respective rogues' galleries on parallel Earths, a mysterious force pulls them into space, trapping them in cages. Stranded and outnumbered, the heroes must break free and unite to confront the villains who’ve orchestrated their capture—before the cosmic threat consumes them all.

Green Lantern and Green Arrow confront the harsh realities of urban neglect when Hal Jordan is shown the suffering of tenement dwellers under slumlord Jubal Slade. After the Guardians of the Universe reprimand Hal for violence, he defies their orders to gather proof of Slade’s crimes—only to find that the scope of injustice extends far beyond one man. As the Guardians send a representative to guide them, the two heroes begin a journey that forces them to see the deeper, unseen struggles across America.

In "The Greatest Green Lantern of All," Green Lantern Tomar-Re confronts the weight of his past failure to save Krypton, only to be reassured by the Guardians of the Universe that his actions—though seemingly lacking—may have set in motion a greater destiny. As the story unfolds, the Guardians reveal how the destruction of Krypton ultimately led to the rise of Superman, the universe's greatest champion.

When Clark Kent begins to fail mysteriously—his powers flickering like a dying light—his desperate drive south leads him to a swamp where a strange fungus from Krypton is already working its deadly course. There, in the murky heart of the wild, he finds the only being who might hold the key to his survival: Swamp Thing.