Phia is a young woman who loves to read and her favourite tale by far is that of the heroic saviour of Tsukiria, Wren. When she is magically transported to the world of her beloved story, a realm plagued by the dreaded Gloom, will Phia manage to learn how to live like the locals by suppressing her emotions in order to stay safe? Or will she fight against the darkness of the Gloom in an attempt to save Tsukiria and it's people from misery?