The Justice League of America's nascent formation is tested by internal conflict and external threats. This story chronicles the early days of the Justice League of America, focusing on the initial interactions and burgeoning rivalries between its founding members: Superman, Batman, Wonder Woman, Flash, Green Lantern, Aquaman, and Martian Manhunter. As they grapple with their individual identities and differing methods, they must learn to trust each other to face a world-ending alien invasion orchestrated by the Kree Empire. The narrative explores the challenges of uniting disparate personalities under one banner, all while navigating the complexities of their secret identities and the public's perception of their powers.

This graphic novel is celebrated for its comprehensive and character-driven portrayal of the Justice League's origin. Critics often highlight its ability to balance epic superhero action with intimate character development, showcasing the internal struggles and growth of the founding members. The narrative is praised for its faithful yet fresh take on established lore, making it accessible to new readers while satisfying long-time fans. The artwork is frequently commended for its dynamic style and detailed rendering of iconic characters and their world.