Princess Diana of Themyscira leaves behind her home town to save the people of D.C.
She works as an archaeologist at the Smithsonian in Washington D.C where she encounters Maxwell Lord.
The Smithsonian throws a party where Maxwell makes an appearance. He plans to steal this mystical Dreamstone, that will allow him to distort time and grant wishes for himself and others.
Maxwell notices the Dreamstone on Diana's desk and takes it. He plans to become all powerful by granting people's wishes.
"My name is Maxwell Lord and I am here to present you with the Dreamstone. With this stone I can grant the wishes of anyone in this room and more. Allow me to fulfill all of your dreams and desires! This will be most powerful thing in history! It will be the most sought-after device with everyone in demand of its powers."
With this stone Maxwell will be all powerful. The more dreams he grants the more powerful he becomes, but for every wish he grants, his life span shortens.