The Mystery Inc. gang experiences the adventure of a lifetime when they travel to Japan on a race to locate the legendary Sword of Fate before the vengeful Black Samurai and his fearsome ninja warriors find it first. An ancient blade said to possess incredible supernatural powers, the Sword of Fate is desired by many. Should the Black Samurai discover it before Scooby-Doo and company, the consequences could be dire for our old friends at Mystery Inc.