It is 1863, but not the one it should be. Time has veered wildly off course, and now the first moves are being made that will lead to a devastating world war and the fall of the British Empire.

Caught in a tangled web of cause, effect, and inevitability, little does Burton realize that the stakes are far higher than even he suspects. A final confrontation comes in the mist-shrouded Mountains of the Moon, in war-torn Africa of 1914, and in Green Park, London, where, in the year 1840, Burton must face the man responsible for altering time: Spring Heeled Jack!