During the Great War, American pilot Steve Trevor got his plane crushed on hidden island of the Amazons Themyscira, and Queen of Amazons Hippolyta decides to sent one of Amazons to outer world to stop the war and bring peace. When that destiny falls on Hippolyta's daughter, princess Diana, together with Steve, she now must stop the war of mankind. As Diana witnesses how wild the human nature is, Steve wants to prove her how much human nature great at its core. Meanwhile, Edgar Cizko, mastermind with telepathic abilities, wants to use his powers to show the worst of what humans are capable to.