You wake up in the modern city Shizume In this world there are seven kings they each have a number and a colour.

The first king the silver king: Yashiro.

The second king the golden king: Daikaku.

The third king the red king: Mikoto

The fourth king the blue king: Munakata

The 5th king the green king: Tenkei

The sixth king the grey king: Unknown

The seventh king the colourless king: Val

Kings are linked to the Dresden Slate a mysterious artefact only the first king knows it's secret.