Jack the Ripper opens the second half of Ragnarok against the demigod Hercules, a predator out of London's fog set against a legend of the ancient world. The terms have not changed: thirteen gods against thirteen of history's greatest humans, with humanity's survival resting on seven victories. Sumo titan Raiden Tameemon waits his turn, and each bout strips the mythology off its fighters to show what they actually fight for.