Justice League Giant was one of four Walmart-exclusive DC series that debuted in 2018. The series featured one original Wonder Woman story per issue, with the rest of the issue consisting of reprinted stories. The series was replaced in 2019 by Wonder Woman Giant.
The Wonder Woman feature story was subsequently re-printed in a standalone mini-series.
Steve and Diana are spending time on the beach in Maryland’s Ocean City when he tells her about his maiden test flight of an experiment aircraft from Washington, D.C. to Puerto Rico before both go for a swim into the ocean. Back at Etta’s new home, Steve tells her not to worry since he will have two other pilots, who are the best at flying, to accompany him. As the key kiss goodbye, Etta enters and assumes them to be burglars before realizing who they are. While later helping Etta move her stuff into her home, she learns about a wildfire in the nature reserve of Park County in Montana, due to which many firefighters have been trapped.
Wonder Woman flies away to help those trapped in the fire and promises to take care of herself. At Park County, Lieutenant Lee tells other firefighters that they need a path out of the fire but all helicopters are grounded and notices the animals in the safe zone with them, learning they’re trapped as well. As they wonder what to do, they notice Wonder Woman has arrived to help them and she tells them that there is a path to the south for escape. Since many firefighters are injured, she convinces the animals to help them and tells them to follow her.
Back at the base camp, as Captain Dillon comforts Lee’s wife Kate after failing to contact him, he notices the animals coming out of the forest with the firefighters on their backs. Diana departs to see if she can help further, but requests Kate to treat the animals like she would treat the other firefighters and she promises she will. On the next morning, the rescued firefighters tell their compatriots about how they were rescued by Wonder Woman who refuse to believe them. Suddenly however, they notice her entering the bar and asking for the drink they promised her earlier.
Returning to Etta later on, she learns that Steve has gone missing along with other pilots over the Atlantic Ocean and the navy, the air force as well as the coast guard are unable to track them down. She states that her invisible plane has been readied to fly and suggests they both go looking, to which Diana agrees.
In Washington D.C., military personnel, including Colonel Steve Trevor, are observing TV reports of crowds protesting against Wonder Woman because she is a pagan, and because she, like the other super-powered humans, is perceived as dangerous. Apparently, Diana had previously been with them at their office in the Pentagon, and Trevor asks where she has gone. He is told that she was watching the TV news; and when she spotted a report about a winged monster terrorizing people in downtown D.C., she took off. Efforts to detain her were futile because of her raw power.
Wonder Woman is walking in D.C. as a crowd gathers and gapes at her. The crowd remains silent out of fear, until a young girl seems unafraid and introduces herself. Wonder Woman and her new friend enjoy an ice-cream break together. Steve Trevor arrives and tries to talk Diana into returning with him to the Pentagon. Diana resists, saying that she wants to fight the forces of darkness that are lurking nearby.
Suddenly they are startled to see one of Darkseid’s minions, making the same pinging sound as before. Several of the aliens swoop down to attack Wonder Woman. Diana is pleased that the battle has come to her, and beams with excitement.
At S.T.A.R. Labs in Detroit, the winged monsters are terrorizing the workers. One of the monsters snatches and abducts Professor Ivo. Dr. Silas Stone is cradling his son Vic, who was seriously hurt in the explosion last issue and appears to be near death. Dr. Stone defiantly says that he once watched his wife die, and will not let his son die too.
In Metropolis, at the site of the abandoned Daily Planet printing press, we see lots and lots of the winged monsters causing more terror. We are told that portals are opening up across the world; and that the armies of demons are pouring out through the portals. Someone exclaims that this is “judgment day”. Superman, Batman, Flash, and Green Lantern are fighting the monsters; but there are now so many of them. Flash, listening to radio broadcasts in his earpiece as he battles, indicates that the attacks are happening all over the world, and that the populace is blaming the super-heroes.
The heroes talk as they fight. Batman and Green Lantern continue to bicker. Flash is surprised to hear that Batman has no powers. Batman wants to step back and regroup because there are just too many of the monsters. He prefers having a strategy instead of just using brute force. Superman is having good success fighting many of the baddies at once, using a nearby 18-wheeler truck as a weapon to pulverize the monsters.
Back in Detroit, we follow Dr. Stone and his co-workers as they enter a secure medical room at S.T.A.R. Labs, carrying Victor as they go. Dr. Stone implores his son to hang on.
Green Lantern is amazed to see Superman swing an 18-wheeler “like a baseball bat”. Superman and Batman observe that the winged monsters are abducting many people now; carrying them away rather than hurting them. Batman wonders what their motive is. Several of the monsters chant “For Darkseid” like before. As the nascent Justice League continues to battle the creatures, Wonder Woman joins the battle. She shouts “Back to Hades” as she barrels into the swarm of monsters, swinging her sword. The other heroes are impressed with her display of strength and fighting prowess. They seem to be impressed by her beauty as well.
In Detroit, Vic Stone, barely alive, goes into cardiac arrest as his father works feverishly to save him using experimental technology. As they activate nanites to help with the integration of the new bio-technology, Vic starts spouting binary code. Subsequently, we hear a message from Vic’s machinery indicating that he is now online.
Wonder Woman explains that she followed the winged monsters, which led her to the other super-heroes. She saw their battle in progress, and decided to help. The winged monsters are circling above a body of water, and then start again making the pinging sounds, which usually indicates that an explosion or other dramatic event is imminent. A waterspout appears rather explosively, and then a large and mysterious object emerges from the ocean. The object appears to be a conveyance of some kind, like a spaceship or watercraft. But it may be something else entirely. The heroes wonder aloud what it is.
Suddenly Aquaman rises from the water, saying the monsters and their giant mysterious object were visible in the water as well. Aquaman wants to know which one of the heroes is in charge; and suggests that he would be a good choice.
