Beyond the US and Canada, the film was released day-and-date with its North American debut in 55 markets (72% of its total release), and was projected to debut with anywhere between $92–118 million. It ended up opening to $125 million, including $38 million in China, $8.5 million in Korea, $8.4 million in Mexico, $8.3 million in Brazil and $7.5 million in the UK. In its second week of release, the film brought in another $60 million, including holding the top spot on France, the UK, Australia and Brazil. In the Philippines, it broke 2017 box office record for highest-earning non-holiday opening day—earning $4.7 million and becoming the 9th-most successful commercial film of all time as well overtaking the record set by Batman v Superman: Dawn of Justice. The film opened in its last market, Japan, on August 25 and debuted to $3.4 million, helping the international gross cross the $400 million mark. The biggest markets of Wonder Woman outside North America are China (US$90 million) followed by Brazil (US$34 million), UK (US$28 million), Australia($23 million) and Mexico($22 million).
Outside the room, Diana confronted Trevor for not standing up to the council. Trevor then told her that they were going anyway, without the council's approval. Diana, distrustful of him for lying, did not believe him; he resorted to using the Lasso of Hestia on himself, revealing in the process that he believed it was a terrible idea and that they were going to die.
The "Year One" storyline retells Diana's origin growing up on Themyscira. She lives an idyllic life and harbors interest for the outside world, and the first connection to it comes in the form of Steve Trevor, who crashes on the island and is the sole survivor. A contest is held to determine which Amazon is the best candidate to take Steve home, with Diana volunteering despite knowing the cost to leave the island is to never return. Diana wins the contest and departs with Steve. Once arriving in America, Diana is taken into custody by the government to discern her origins. She meets Etta Candy and Barbara Ann Minerva along the way. While incarcerated Diana is visited by the gods in animal form and bestow upon her powers of strength, speed, agility, durability, and flight. She discovers Ares, the god of war, is working to destroy humanity. Accepting her new role in Man's World, Diana, with the help of the gods in animal form, subdues Ares with the lasso. Now called Wonder Woman, Diana becomes one of the world's greatest heroes.
On October 21, 2016, the United Nations controversially named Wonder Woman a UN Honorary Ambassador for the Empowerment of Women and Girls in a ceremony attended by Under-Secretary-General for Communications and Public Information Cristina Gallach and by actors Lynda Carter and Gal Gadot. The character was dropped from the role two months later after a petition against the appointment stated Wonder Woman was "not culturally...sensitive" and it was "alarming that the United Nations would consider using a character with an overtly sexualized image".
Trevor was taken to be interrogated using the Lasso of Hestia. Though he tried to resist the lasso's power at first, unwilling to reveal military secrets, he nonetheless was powerless to withstand it and admitted that he was a spy. He told them that he'd been on a mission to observe General Ludendorff and Doctor Poison, that he'd stolen the latter's research notebook, and that his escape had brought himself and the Germans to Themyscira. He described the Great War, informing them that millions of people had died. Hearing this, Diana deduced that only Ares could be behind a war of that magnitude. She tried to persuade Hippolyta to send the Amazons back with him to face the god, but her mother refused, much to Diana's confusion.
During the fight, Steve approaches Diana who can't hear him speak due to an explosion temporarily rupturing her eardrums. Steve, after much talking, departs and leaves Diana with his watch before boarding the plane which is taking off with the mustard gas. Ares eventually restrains Diana, imploring her to surrender and realize the futility of their fight. Diana notices the plane in the sky as she's pinned to the ground and watches in horror as it explodes with Steve sacrificing himself to save billions of lives.
A fight broke out among the heroes for possession of the box and was only ended when John Constantine took the box, being the only one capable of doing so without being corrupted. Zatanna and Constantine took the box to the temple of Hephaestus, where the three Justice Leagues had converged again. After yet another battle between heroes, the box went dormant and the Justice Leagues discovered a Kryptonite sliver in Superman’s nervous system, placed there by the Atomica, a traitor working for the Outsider, leader of the Secret Society. Then, the Outsider used the box to open a path across universes, allowing the Crime Syndicate to enter the Justice Leagues' world.
Wonder Woman is trained in the a variety of martial arts, making her a master of unarmed and armed combat (even proving adept with pistols). Before Flashpoint Batman considered Diana the best melee fighter on the planet, even putting her ahead of Superman, due to the combination of her power and the depth of her training. Even when depowered, she is on par with some of the best hand-to-hand combatants in the DC Universe.
In May 2017, early tracking had Wonder Woman opening with $65–75 million, and possibly as high as $105 million. The film opened Friday, June 2, 2017, across 4,165 theaters and made $38.7 million on its opening day, including $3.7 million in IMAX. It was the biggest single-day gross for a woman-directed film, ahead of the $35.9 million opening Friday of Catherine Hardwicke's Twilight in 2008 and the biggest opening day for a woman-led comic book superhero film, ahead of Ghost in the Shell ($7 million). This included $11 million it made from Thursday previews, also the best start for a film directed by a woman, surpassing Fifty Shades of Grey's $8.6 million which was directed by Sam Taylor-Johnson, and the third-biggest of the year, behind Beauty and the Beast and Guardians of the Galaxy Vol. 2. Of that, $1.5 million came from IMAX screenings.
In the Golden Age, Wonder Woman adhered to an Amazon code of helping any in need, even misogynistic people, and never accepting a reward for saving someone; while conversely, the modern version of the character has been shown to perform lethal and fatal actions when left with no other alternative, exemplified in the killing of Maxwell Lord in order to save Superman's life.
“Closeup, full length figure of WW. Do some careful chaining here—Mars’s men are experts! Put a metal collar on WW with a chain running off from the panel, as though she were chained in the line of prisoners. Have her hands clasped together at her breast with double bands on her wrists, her Amazon bracelets and another set. Between these runs a short chain, about the length of a handcuff chain—this is what compels her to clasp her hands together. Then put another, heavier, larger chain between her wrist bands which hangs in a long loop to just above her knees. At her ankles show a pair of arms and hands, coming from out of the panel, clasping about her ankles. This whole panel will lose its point and spoil the story unless these chains are drawn exactly as described here.”
Flash and Cyborg save all the hostage, which Silas Stone tells Victor that Steppenwolf can not get the final Mother Box. Batman then jumps down into the Knightcrawler and saves Wonder Woman after a Parademon manages to briefly knock her out. The Knightcrawler gets attacked by Steppenwolf, and Barry helps Wonder Woman get her sword so she can help Batman.
Ares told Diana that he had been imprisoned by the other Gods of Olympus and bound in chains that were secured by Aphrodite through the power of her love. He also told her that years ago, Phobos and Deimos had implanted false memories of Themyscira into her mind, and these had caused her to imagine aspects of her past that had never happened in reality. Meanwhile, Phobos and Deimos entered Themyscira and battled with the Amazons. Diana knew what she had to do, and called Ares to unite her with Phobos and Deimos. He teleported them to her, and using her Lasso of Truth, Wonder Woman bound them through the power of her unconditional love for them, as Aphrodite had done to Ares. With the twin gods defeated, Diana attempted to leave Ares' prison along with Veronica and Izzy, however Izzy's essence had been attached to the realm and could not return to Earth. Izzy was forced to either live out the rest of her days in the prison or live in Themyscira as an Amazon for eternity. She chose the latter and Veronica said goodbye to her daughter. Diana was briefly reunited with her mother, for the first time since she left the island.