In summary, we have synthesized defect-free lead bromide magic-sized nanoclusters (QD4) emitting at »460 nm, with near-unity PLQY and narrow FWHM (See Supplementary Table ), formed under the MLA/OAM-mediated selforganization conditions. We have determined the structure of individual magic-sized nanoclusters including the locations of bromine, cesium, carboxylate, and OAMH + groups on the QD surface-structural information much sought after in this field of research. The key synthetic feature includes template growth with corner and edge stabilization by MLA and OAMH + , which resulted in nearly exclusive formation of QD4 of high structural purity. The key analytical technology includes the SMART-EM imaging of individual nanoclusters captured on a "chemical fishhook," which provided information hitherto unavailable by a conventional method including dynamics of ligand coordination on individual nanoclusters revealed with millisecond and angstrom spatiotemporal resolution. The work illustrates the potentiality of cinematic chemistry for the exploration of chemistry and materials science beyond the conventional limit .