When the evil and powerful Steppenwolf returns to Earth with his demons after the death of Superman, he retrieves the Mother Box from The Paradise Island. Queen Hippolyta warns her daughter Diana Prince about the menace to the planet and the Wonder Woman meets Batman to discuss how defend Earth. Meanwhile Steppenwolf retrieves the second Mother Box from Atlantis and Batman and Wonder Woman team up with The Flash, Aquaman and Cyborg, with the support of Alfred, to protect the last Mother Box entrusted to humans. But Batman concludes that they do not have enough power to save the world and proposes to use the power of the Box to revive Superman despite the risks. Will his plan work?