Jiang Liyun, a young boy who is a genius in materials science, unexpectedly discovered the invisible secrets contained in the unique nanometer fiber structure in the ancient coir raincoat left by his grandfather. Combining modern materials science, he reproduced and upgraded this "escape" coating in the laboratory that can absorb full-band electromagnetic waves and simulate environmental optics. With the breakthrough of anti-radar raincoats, the power of stealth technology has begun to show, but it has also attracted concerns about surveillance and abuse. Jiang Liyun joined forces with his senior brother Lu Zhaoheng and mentor Tang Guanfu to establish the "Invisible Technology Ethics Committee". With the rigor and sense of responsibility of a materials person, he promoted the birth of the "Convention on the Use of Invisible Technology" in the collision of laboratories, classrooms and conference rooms, using science and wisdom to protect the boundaries and original intentions of "invisibility" in the modern world where light and shadow are intertwined.
