When the Kingdom's mages summon not one, but two Saints, and the first is whisked off towards grandeur and glory, the second, older woman, Sei, must make a new life in a fantasy realm.

Sei greets her second summer in this world. Now that the miasma is under control and she has a bit of free time to do a little exploring...

To combat the source of the miasma and the unusual monsters in the area, Sei and her faithful guard venture into the local mine, where a frightful danger awaits them...