The story of Diablo 4 is revealed through a Prologue, four Acts, and an Ending, but that ending may in fact not be what players are expecting.
Diablo 4 takes place many decades after the events of Diablo 3 and begins its tale centered around the story of Diablo 4 Gold the fallen angel Inarius and his former lover, the demon Lilith. Their sordid history not only shaped the lives of every human living in Sanctuary, but they were actually the creators of Sanctuary itself and their son was the first Nephalem. Early in the game, players find many of the humans have taken to worshiping Inarius with a church dedicated to him, while another cult has taken root that pledges allegiance to the demon Mother of Sanctuary.
The story of much that occurred before Diablo 4 is tied together in this latest entry into the series, with additional knowledge given regarding the Horadrim, Nephalem, and the very creation of humanity in Sanctuary. After Lilith was shackled by Inarius long ago, their offspring, the Nephalem, evolved into the humans that fill the world now, with their powers laying dormant within them. As Lilith breaks free from her bondage early in the Diablo 4 Gold for sale game, she sees that by reigniting these powers within the humans who will follow her, she can use them to gain the control she desires.