Saori Shiroyama and her husband lived a quiet life in Kawasaki when one day they received news that their close friends, the Takahashis—whom they had spent intimate times with back in their twenties—had died together during a trip. Shocked by the news, the couple reminisced about their passionate youth and decided to revisit the places where they once traveled together. Filled with the same fervor they once shared, they set off on a new journey, reigniting desires long buried.