Gu Yu, an urban youth in 2024, suddenly has star scars appear on his palms, accompanied by recurring dreams of Kirishima Shrine. He found a diary from 1985 among his grandfather's old belongings. The author Shen Xingmian's experience strangely overlapped with his own.
At the same time, Shen Xingmian of Kirishima Town also received a diary from 2024. The description of the diary owner Gu Yu shocked her - they both had the same scars on their palms, and the diaries predicted a disaster in Kirishima. The encounter across time and space made them realize that only by finding the shrine's "Mountain Bell" can they break the cycle of the mudslide in 1985 and the landslide in 2024, and complete a redemption related to the past and the future.
