Another anomaly has occurred: an anomaly in which ghosts from the outside world have poured into Gensokyo.
Among the countless bewildered ghosts wandering Gensokyo, one lost ghost drifted into Hakugyokurou. It had forgotten everything about itself. All it wanted was to recover everything that belonged to it, then calmly set out on the journey to the other shore.
Thus, the ghost left Hakugyokurou and ventured into the Bamboo Forest of the Lost, wandered through human villages, descended into the Blazing Hell, and ascended to... In order to reclaim its memories, it was destined to travel every corner of Gensokyo.
And the ghost's journey through all it encountered was a journey through the afterlife in Gensokyo.
