PO:OP is set in the future, around the years 2222 AD. Virtual online games, such as Prophecy Online, have become a major entertainment and way to socialize.

Here, we follow the story of Ludwig, an elementary school dropout. He was kicked out of the educational system after a sad misunderstanding traumatizing half of his classmates. After years, Ludwig is allowed to set foot on a school again. However, the situation turns sour as he meets one of the girl he had traumatized in elementary school.