Now a mod boutique owner, the powerless Diana Prince acquired a Chinese mentor named I Ching. Under I Ching's guidance, Diana learned martial arts and weapons skills, and engaged in adventures that encompassed a variety of genres, from espionage to mythology. During this time she fought villains such as Catwoman, Doctor Cyber, the hippie gang Them!, and the campy witch Morgana.
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.
This version was conceived of as a prequel to the first live-action, theatrical appearance of Wonder Woman, in the 2016 film, Batman v Superman: Dawn of Justice, placing Wonder Woman in the 1910s and World War I (a decision which differs from her comic book origins as a supporter of the Allies during World War II). As for story development, Jenkins credits the stories by the character's creator William Moulton Marston in the 1940s and George Perez's seminal stories in the 1980s in which he modernized the character. In addition, it follows some aspects of DC Comics' origin changes in The New 52 reboot, where Diana is the daughter of Zeus. Jenkins cited Richard Donner's Superman as an inspiration.
The team learns that a gala will be held at the nearby German High Command. Steve and Diana separately infiltrate the party, with Steve intending to locate the gas and destroy it, and Diana hoping to kill Ludendorff, believing that he is Ares and thus killing him will end the war. Steve stops her to avoid jeopardizing his mission, but this allows Ludendorff to unleash the gas on Veld, killing its inhabitants. Blaming Steve for intervening, Diana pursues Ludendorff to a base where the gas is being loaded into a bomber aircraft bound for London. Diana fights and kills him, but is confused and disillusioned when his death does not stop the war.
After recruiting a newly mortal, but still very bitter Hera into her group of companions, Wonder Woman retreated to London. Lennox revealed that there had been seven bastard children of Zeus. He and Diana were two, two others had been killed, and three remained. He suggested that for information on where the baby had been taken, Diana should contact their sister Siracca in Libya. Her encounter with Siracca did not begin well, but after Wonder Woman appealed to her sense of family, she suggested that Diana seek out their brother Milan in New York City.