If he'd known all the trouble following her, itinerant photographer Michelangelo "Mage" Magistrale would have thought twice about helping the beautiful, distressed woman at the bus station. In return for a ticket she gives Mage what she says is the key to her apartment, but he quickly discovers that it's much it's a key to any door, to any place, to incredible power—and there are people who will stop at nothing to possess it. Suddenly Mage is on the run from Calgary to Los Angeles, under constant attack from ninja, Yakuza thugs, and terrible creatures ripped from Japanese mythology. His only hope is to discover the secret of the key and master its power—to learn the art of arrow cutting—before he comes to the inevitable confrontation with the dark forces pursuing him.