The echoes of youth have been intertwined on campus radio for three years. Wen Qingli and Shen Xinghe are each other's most tacit voices. When the second year of high school was divided into subjects, a gap in reality suddenly opened: Wen Qingli, who was eager to follow his essay selection, was forced back to the science track by her parents, while Shen Xinghe silently changed his choice to science. The reunion of Class 16 became the only sugar in the bitter fate. A piece of paper that says "Let's take the B University exam together" is the glimmer of two people holding each other tightly.
However, the light suddenly fell. Shen Xinghe died in a getaway car accident, leaving only Wen Qingli with a dusty mathematics notebook and the dead silence after the world collapsed. Deeply depressed, she struggled in the abyss of not being understood and failed the college entrance examination. Re-reading is a desperate attempt at redemption, and it is also the fulfillment of an unfinished agreement. When she finally mustered up the courage to open the notebook that symbolized taboos, a note four years late fell down - it was his unspoken confession.
Carrying the weight of "I like you", Wen Qingli walked through the valley of despair and walked step by step towards the unnamed lake they agreed on. Under the big ginkgo leaves, the sounds of the past come back like a tide. That notebook, that note, is the passing light and the revelation that penetrates the darkness. She finally learned how to let love take root in the soil of regret and send out new shoots - life is endless, and the sound is unfinished.
Concept: The abyss cannot be filled, but light can take root at the bottom of the abyss