The story tells of Mei, a 30-year-old woman from Tokyo, who sends a message to her friend Toshi in Hamburg, telling him about haiku, strange recollections from her youth, and the last muggy summer night. Still shocked by the death of the journalist Iwaji Masaki she falls into a dream-like hallucination bringing back various testimonies of the legendary 1970s Hashimoto experiment. The objective was to show that plants have a conscience, enabling them to be used in the future for the investigation of crimes. Part media history, part ghost story, the film interweaves science and mythology and leads one to a space beyond comprehension and reason.