In Qingyun Middle School, a provincial key middle school, Lin Zhi, an art student, and Shen Shuyan, the top science student, became connected through a mysterious sketchbook. Lin Zhi's charcoal sketches and Shen Shuyan's mathematical annotations are intertwined on the page. The romance of Gothic architecture and the rigor of architectural mechanics collide in light and shadow.
From the first confrontation in the basketball hall to the light and shadow exhibition in the art museum, from the heating incident in the library to the installation creation at the art festival, two teenagers with very different personalities are looking for a balance on the balance of reason and sensibility. When the art exam training triggers a crisis of trust, and a heart-to-heart talk on the rooftop on a rainy night reveals the truth, they discover that the Möbius strip in the sketchbook has already closely linked their fates.
This is an encounter about youth, dreams and growth. When the cold formulas of the architectural family meet the warm brushstrokes of the artistic girl, when rational calculations accurate to millimeters meet the heartbeat that cannot be measured by data, they will eventually find each other's light in the refractive index of dusk.
