The final remaining relics Darkseid needed were being guarded by A.R.G.U.S. at their HQ, so Darkseid decided to use a Boom Tube to transport the building and all its contents to his base in the Amazon Rainforest. The Female Furies retrieved the relics and put them into place while Wonder Woman fought Darkseid. With the relics' power, Darkseid was able to open a portal to Themyscira. As it is impossible for one who has set foot on Themyscira to return after leaving, Diana was unable to follow Grail through the portal. Grail invaded and began transforming the Amazons into creatures resembling Darkseid's Parademons. As Jason had never actually set foot on Themyscira, he followed Grail and met his mother Hippolyta for the first time since his birth. While Jason and Hippolyta fought off the transformed Amazons, Wonder Woman was able to defeat Darkseid through her love for her deceased father, Zeus, and her half-siblings, calling their spirits out of Darkseid's body and destroying him from the inside. The Amazons captured Grail and imprisoned her in the prison beneath Themyscira, alongside Ares, while Darkseid re-emerged somewhere on Earth. Jason was gifted a magical spear from his mother and returned to Earth.
At the time of her debut, Wonder Woman sported a red top with a golden eagle emblem, a white belt, blue star-spangled culottes, and red and golden go-go boots. She originally wore a skirt; however according to Elizabeth Martson, "It was too hard to draw and would have been over her head most of the time." This outfit was entirely based on the American flag, because Wonder Woman was purely an American icon as she debuted during World War II. Later in 1942, Wonder Woman's outfit received a slight change – the culottes were converted entirely into skin-tight shorts and she wore sandals. While earlier most of her back was exposed, during the imposition of the Comics Code Authority in the mid-1950s, Wonder Woman's outfit was rectified to make her back substantially covered, in order to comply with the Authority's rule of minimum exposure. During Mike Sekowsky's run in the late 1960s, Diana surrendered her powers and started using her own skills to fight crime. She wore a series of jumpsuits as her attire; the most popular of these was a white one.
To find the perfect location to shoot the Amazon island of Themyscira, the birthplace of Wonder Woman herself, the film's producers searched all over the world, finally settling on the Cilentan Coast: a stretch of coastline on the Tyrrhenian Sea, located in the Province of Salerno in Southern Italy. It was chosen because most beaches in the world that sit below big cliffs disappear beneath the tide for part of every day. Production designer Aline Bonetto and her location manager Charles Somers considered 47 countries and visited several of them before they found what they were looking for. Bonetto explained that, "Italy had beautiful weather, a beautiful blue-green sea, not too much tide, not too much wave. Our effects team added some cliffs in post-production, and it was the perfect way to go". The estuary at Lower Halstow in Kent is featured in the scene in which Diana arrives at a Belgian creek to make her way to the warfront. Bill Westenhofer served as the visual effects supervisor for the film and Martin Walsh served as editor.
The costs for television advertisements for Wonder Woman are higher in comparison to that of previous DCEU film Suicide Squad. Warner Bros. has spent over $3 million on advertisements for Wonder Woman, whereas they spent $2.6 million on advertisements for Suicide Squad. Ticket selling site Fandango reported that Wonder Woman rounded the final leg of its marketing campaign as the most anticipated blockbuster of summer 2017, according to a poll conducted by 10,000 voters, the biggest survey in company history. Separately, Fandango also found that 92% of people surveyed said that they are looking forward to seeing a film that features a standalone woman superhero, and 87% wished Hollywood would make more women-led superhero films. In May 2017, NASCAR driver Danica Patrick drove her No. 10 car with a Wonder Woman paint scheme at the Go Bowling 400 in Kansas and at the Monster Energy Open in Charlotte.
Gloria Steinem also liked the film, stating that she felt it made the "Amazon origin story clear; [Wonder Woman] was stopping war, not perpetuating it." Steinem also noted that she knew "some women were disappointed by all the makeup, but I may be desperate—I was just happy that the Amazons had wild hair!" Her only complaint lay in the choice to eliminate the World War II setting as the Wonder Woman comic book developed in response to existing comics that were "so sadistic and racist that there was a congressional hearing on the subject". Steinem also gave Hillary Clinton the first Wonder Woman Award in October 2017 during the Women's Media Center's "Speaking Truth to Power Awards" (an organization created by Steinem, Jane Fonda, and Robin Morgan). Upon receiving the award, Clinton noted that she had seen Jenkins's Wonder Woman film and that she "loved the outfit". She also said that as her granddaughter was "really keen" on Wonder Woman, Clinton "thought maybe I could borrow something from her for the night. It didn't quite work for me, but I will say that this award means a lot to me because as a little girl, and then as a young woman, and then as a slightly older woman, I always wondered when Wonder Woman would have her time, and now that has happened." Clinton had previously praised Jenkins's film, in a public August 2017 message, stating that "it was just as inspirational as I'd suspected a movie about a strong, powerful woman in a fight to save the world from international disaster would be."
As the men helped the Amazons prepare for battle against the First Born's army, Diana received news that the First Born had been attacking other gods' realms. With Eros and Artemis, Wonder Woman ambushed the Minotaur at Demeter's home. Unfortunately, the First Born had already defeated Demeter, so Wonder Woman sent her companions to safety while she confronted him by herself.
Throughout Diana's childhood, she was training and sparring with her Amazonian sisters. One day when pilots were test flying, one of the pilots called Steve Trevor, has an accident with his plane, and Hippolyta opens Themyscira's shields and disguise, and Steve Trevor lands his plane on Paradise Island. Steve then proceeds to explore the island, and that's where he finds beautiful women bathing, but while staring at the women, Diana surprises him from behind and takes him out by kicking him in his testicles. Steve is then strapped up because of Hippolyta keeping him safe until someone proves worthy enough to escort him back to the USA. Wonder Woman while covered in a helmet, wins the challenges and gets to escort Steve back home, but while the challenges were going on, a traitor in the Amazons freed Ares because she loved him. Ares is free, and he goes to Hades so he could remove the bracelets blocking his powers.Throughout being in USA, Diana also tries to stop Ares' plans as Wonder Woman, but she fails the first time, and Ares gets ahold of the power he was searching for. After calling in his army, the US finds an island that appeared out of nowhere on the map, that being Paradise Island. They set off a nuke towards Paradise Island, and Steve manages to stop it, and at the same time, Wonder Woman defeats Ares with help from her Amazonian sisters. She realizes her feelings for Steve, and she kisses him, but when being back in Paradise Island, she looked sad. Hippolyta allowed her to operate in the outside world where she shared her feelings and her life with Steve.
Wonder Woman was now a princess and emissary from Paradise Island (called Themyscira) to Patriarch's world. She possessed stunning beauty and a loving heart, gifts from the goddess Aphrodite. From Athena, she received the gift of great wisdom; from Demeter, the power and strength of the earth; from Hestia, sisterhood with fire; and from Artemis, unity with beasts and the instincts and prowess of a hunter. Finally, Diana received the gift of speed and the power of flight from the god Hermes.