The series was influenced by works such as Kingdom Come, The Golden Age, Watchmen, and The Dark Knight Returns. Much like The Golden Age, New Frontier takes place primarily in the 1950s, and depicts the Golden Age superheroes Superman, Batman, and Wonder Woman meeting Silver Age characters the Flash, Green Lantern, and Martian Manhunter. The story bridges the gap from the end of the Golden Age to the beginning of the Silver Age in the DC Universe.