Rumor has it that the summoned world is a world that is summoned, woven by the summoner's wishes.
But no one knows who he is, and no one knows where this world is or what it looks like. It is just rumored that there is a passage leading to that world.
The greed of human nature has led tens of millions of people to try and succeed. Although they all ended in failure, the exploration and competition never stopped.
Until an ordinary college girl got involved...
Concept: Faced with a sudden mission, how will an ordinary girl save the world?