In 2025, Lin Xiaoyu fell from the rooftop of a demolition building in Wangxili. Despair and relief struck at the same time, but at the last moment, she heard the words "I will come to you, in the future", as well as the looming pen and locust flower in the young man's hand.
When she opened her eyes again, the countdown to her senior year stung her eyes, and the familiar yet depressing classroom surrounded her. The appearance of the transfer student Jiang Yu completely broke her memory of her previous high school senior year. He is a cold and distant academic leader in the eyes of others. He always keeps to himself, but when Lin Xiaoyu is missing, he will hand over her school uniform jacket with a faint soapy scent; he will leave beautiful comments on her mistakes.
Lin Xiaoyu discovered that the pen engraved with the word "rain" in Jiang Yu's hand was exactly the same as the pen he had lost in his previous life. In the meeting of eyes again and again, those forgotten agreements and familiar temperatures are quietly reviving. They strolled through the corridors of Shangde Middle School, and the setting sun stretched their shadows long.
Is this rebirth a mercy of fate or another carefully planned encounter? As the college entrance examination bell gradually approaches, Lin Xiaoyu must use this limited time to uncover the secrets of Jiang Yu, retrieve the lost past, and rewrite the ending of the two of them. And in the torrent of time, can they hold each other's hands tightly and let this bond that spans life, death, time and space bloom into the most beautiful flowers?
Intention: The fate of running in both directions: the bond across time and space