In Tokyo’s Ueno Park, a body that died of unnatural causes was discovered. The victim was a drifter that wandered the park. The player / protagonist (a detective) and junior detective Ken Kaimeiji discover a purse that reads “浜〇真珠” (the 〇 was chipped away and unreadable) at the scene. It turned out that the purse was made in the Ise region, as revealed by a smartphone search for “浜〇真珠.” And so the protagonist and Ken immediately left for Ise Shima…