1998年夏季,拥有预测型未来视的女孩濑尾静音(井口裕香 配音)邂逅伽蓝之堂的黑桐干也(铃村健一 配音)。从对方口中,她了解到未来视的真相,心中的疑惑和焦虑也烟消云散,但同时也看到了干也悲剧性的未来。
A chance encounter. Between the waves and the cliffs. At night. A week later, he got married. For many years, she no longer believed in happiness. They met. They play. They speak. They want each other. As a gift - unconditional. It's like a dance - on the edge of the void. One night. One night only. Their only night.