Transfer student Lin Tang hid in an abandoned studio to steal paintings, but she bumped into president Zhou Ji sketching her back with a pencil. Both of them have hidden works that they dare not reveal to others. One closed the pen due to pain, and the other suffocated due to pressure. When art teacher Su Rui's secret guidance, student union Lu Zhao's pressing step by step, photographer Bai Wan's lens and Chen Granny's silent waiting intertwined into a web, their brushes turned from escape to confrontation, from loneliness to resonance. Every unsigned painting is an echo of the heartbeat.
