Steve Trevor died at the end of Wonder Woman after sacrificing himself to ensure that a plane full of deadly gas couldn’t harm anyone on the ground. Is this Steve Trevor the same Steve Trevor that we saw in Wonder Woman who was transported to 1984 because of something like time travel, a descendant of Steve Trevor’s who is also named Steve Trevor (and looks exactly like Pine), a clone, or something else entirely? (It’s a comic book movie, so anything is possible.)
In the first story arc, Wonder Woman meets and protects a young woman named Zola, from Hera's wrath. Zola is pregnant with Zeus's child and Hera, seething with jealousy intends to kill the child.   The major event in this story is the revelation of Diana's true parentage. Long ago, Hippolyta and Zeus battled each other. Their battle ended with the couple making love and thus Diana was conceived. The first six issues of the New 52 series are collected in a hardcover titled Wonder Woman Vol. 1: Blood.
Hera Sea Devils #14 (November–December 1963) Hera is the Queen of the Gods, Goddess of Marriage, Home, Women, Childbirth, and Family who is based on the goddess of the same name. Post-Crisis, she destroyed Themyscira after finding Zeus leering at Artemis of the Bana-Mighdall. In the New 52, Hera initially appears antagonistic, though after her immortality and powers are stripped from her by Apollo, she joins Wonder Woman in her quest to protect the reincarnated Zeus. Post-Rebirth, she appeared as a peacock and aided Wonder Woman alongside several other gods.
Centuries ago, an argument between Aphrodite and Ares led to the creation of the Amazons, who have been guided and protected by the goddesses ever since. Ares' recent schemes to destroy the Amazons and his fellow gods led to an Amazon champion being chosen. This champion was the Princess Diana, daughter of Queen Hippolyta, whom Hermes escorted to Man's World. There she was called Wonder Woman. Hephaestus forged Wonder Woman's golden Lasso of Truth from the girdle of the earth-goddess Gaea, and her silver bracelets which he formed from the splintered Aegis of Zeus. While the Olympian gods were her patrons, other gods were her foes. Ares and his progeny, Deimos and Phobos, quickly set about challenging the princess in her quest. Phobos created the creature Decay from the "heart of the Gorgon," which Diana quickly dispatched. Meanwhile, Deimos recruited humans on opposing sides, inciting them to war.
Zeus' father Cronus returned with an army of new Titans: Arch, Disdain, Harrier, Oblivion, Slaughter, and Titan. Their power had grown from the faith of a cult on Earth. The Titans heralded the coming Cronus. Cronus sought to capture all power of the godwave. He began by defeating the Olympians and casting Zeus down to Earth. He then conquered the Hindu pantheon and headed for Heaven. But Wonder Woman freed the Olympians and united with the Hindus and the Pax Dei (heavenly host). Diana trounced Cronus but the god still managed to touch the power of the Source. In doing so, he gained perfect clarity. Humbled, he returned to mother Gaea. Afterwards, Zeus formed an alliance with the other pantheons. Indeed, Zeus soon appeared to Superman with several allies under the banner of I.D.C.A.P. (Interfaith Deity Council of Active Polytheistics).
Zeus has made a woman called Zola pregnant. Hera, due to this, is furious. She sets out to kill Zola, but Hermes finds her first, only to find out that Zola does not want to come with Hermes. Zola opens the door, and an arrow is shot at her direction; Hermes pushes her away in time, and gives her a key, as assassins sent by Hera and it teleports to Wonder Woman’s apartment, because Hermes enlisted Wonder Woman to protect Zola. Zola gives Wonder Woman the key, and it teleports both Wonder Woman and Zola back to Zola’s house. After Zola finds out that she is pregnant with Zeus, it gets revealed that one of Zeus’ children is going to take his place, by Zeus’ own will. Wonder Woman takes Zola, along with Hermes, to Themiscyra where Diana explains to her Mother, Queen Hippolyta, why she took with herself Zola and Hermes to Themiscyra. Alongside all of this, Hippolyta tells Diana about her true origins; that her real father is Zeus. Diana’s reaction to this isn’t very well, so she decides to abandon Themiscyra. Hera is aware of the fact that Wonder Woman is Zeus’ daughter, and she arrives to Themiscyra, furiously. Wonder Woman realized she did a mistake by leaving her home, so she went back to Themiscyra where she sees that everyone has been turned into snakes by Hera, except for Hippolyta, she was turned into stone. Apollo arrives in a bar searching for War (Ares), and explains to him that Zeus doesn’t even exist from what he’s sources says. Apollo takes this as his chance to become the king of Olympus and the Gods.