Mr. Hoyle has a mind as finely tuned as the piano the narrator, a concert pianist, is constantly fussing over. This tells of the sometime 1966 when the earth is literally split up into different time zones. England remains intact and watches appalled as World War I rages in Europe. Expeditions to the rest of the world show America in some sort of primitive state, Greece in its glory, China replaced by a plain of fused glass, etc. The narrator ends up in Greece competing artistically with the Gods... until he meets the real oracles. The logic may be a little haphazard but it's fine storytelling.