Wan Hai, a silent and insecure high school sophomore, is a classroom "transparent person" whose only hobby is secretly drawing, though he dares not show it due to past mockery. The gentle approach and sincere encouragement of new deskmate Lin Wan illuminate his closed-off world like a ray of light. With the support of Lin Wan and the head teacher, Wan Hai gathers the courage to participate in the campus art festival's art exhibition, putting daily campus life into his drawings. In the end, his work wins first prize, gaining him recognition, helping him step out of the shadows, and making him confident, cheerful, and resolute in his footsteps of pursuing his painting dream, opening a brand-new path of youth growth.