"Non-rem sleep" means deep sleep. Are the three mysterious short stories that we broadcast this time a dream? Or is it real? Dreams and reality, reality and unreality ... The mysterious bakarhythm world that goes back and forth between them is the "non-rem window."

Ninagawa is a powerful man in Japanese politics and with top economic connections.His granddaughter is then murdered. The suspect is Kunihide Kiyomaru. Kunihide Kiyomaru has a prior conviction for assaulting and killing a girl 8 years ago. The police could never apprehend the suspect in the prior killing.

Yokohama, 1963. Japan is picking itself up from the devastation of World War II and preparing to host the 1964 Olympics—and the mood is one of both optimism and conflict as the young generation struggles to throw off the shackles of a troubled past. Against this backdrop of hope and change, a friendship begins to blossom between high school students Umi and Shun—but a buried secret from their past emerges to cast a shadow on the future and pull them apart.