Inspector Morimoto and Detective Suzuki are presented with a new series of mysterious conundrums in their latest set of adventures that take them to the ancient burial mounds of the Kibi kingdom. An apparent robbery at the Okayama Avian Foundation is so uniquely distinctive that the Chief of Police is worried that the local criminals are trying to make fun of his beloved Police Department. And while the head groundskeeper appears absorbed in his task of rearing the elegant Japanese cranes, Morimoto and Suzuki are keenly aware that he also turned up on the other side of town at the same time as a rather dramatically posed corpse.
The Chief is frantically making arrangements with the prefectural Science and Technology Division for the influx of reporters that are expected for one of the city's most important press conferences. He knows that it's a great chance to show off his Police Department, but his nerves become severely unsettled when a scandal concerning a famous unsolved case is uncovered. And as Morimoto and Suzuki use their superlative powers of logical deduction to identify the villains, the Chief launches his own secret plan that is guaranteed to delight the Police Department's judo champion.