Ivar, the time-traveling immortal adventures through history. Transported against his control by mysterious "time arcs" that lead him toward an uncertain destiny. Finding himself in Roman Britain, Ivar faces legionaries in the midst of a rebel assault. Meanwhile, a paradox leads our hero to a chance encounter with the Eternal Warrior in Bavaria -- deep in the heart of a Nazi castle.
Ivar rushes through time to protect the youthful Mac and Patsy from the vengeful Jahk'rt. In saving them he puts himself in peril and now must save himself before he can save others from Jahk'rt's plans to rule the universe.