In rainy Tokyo and the drizzle-soaked town of Itomori, two young people from different eras, Mitsuha and Taki, are still experiencing their unexpected body swaps. But before they can savor this strange bond, danger quietly descends. A warning from the mysterious “Riftkeeper” crashes like thunder, revealing that their exchanges are accelerating the collapse of time and space. At dusk three days from now, a temporal storm will erupt from the crater in Itomori and consume everything. On one side is the family duty revealed by Mitsuha’s grandmother: use the braided cord, which carries their bloodline and bonds, to sever their connection and seal the rift. On the other is Taki’s refusal to give up, as he rushes into danger with a device to stabilize time and space that he designed through sleepless nights. When the sunset glow blankets the crater, the rift’s immense pull and the Riftkeeper’s cold obstruction come one after another. They must choose between protecting time and space and staying true to each other. One is willing to fall into the rift to guide its energy, while the other clutches the cord and weaves hope. The separated halves of the cord become their only connection across time and space. A year later, the two, their memories blurred, meet again at an exhibition of unfamiliar architecture. The half-cord in their hands grows faintly warm. Is it the guidance of fate, or a bond across time and space left unfinished? As the red threads intertwine once more, can they uncover the Riftkeeper’s secret and reconnect fractured time, space, and feelings?