本片将描绘被称为日本史上最大谜团的“本能寺之变”前一日,追踪这一谜团的历史悬疑电影。故事从现代的京都开始,正处于即将结婚的人生岔路上的茧子(绫濑遥 饰)住进了一家本能寺酒店,这是一家能够与战国时代相连的不可思的酒店,茧子在这里遇见了即将统一天下的织田信长。A woman decides to stay in a quaint hotel in Kyoto's historic quarter, but soon finds herself in the middle of 16th Century Japan, playing a major role in one of the country's most important historical events.