<p>In plasmonic nanocavity structures crafted by multiparticle-film systems, the accurate regulation of hot spots’ intensity and location plays a pivotal role in driving the progress of plasmon-enhanced spectroscopy, ultrasensitive sensing, photovoltaics, and photocatalysis. Here, we conduct theoretical simulations on Au@SiO₂ multiparticle-film configurations. By stimulating plasmonic coupling effects at diverse oblique incidence angles, we can more precisely manipulate the positions of hot spots within particle-film junctions. Notably, at specific oblique incidence angles, plasmon modes with the most robust magnetic properties can be generated, peaking at a maximum value of 2.4 × 10¹². Additionally, through optimizing the radius of nanospheres in heptameric objects, Fano resonance can induce the formation of super-enhanced hot spots that are in excellent alignment with the 785&#xa0;nm resonance mode. These remarkable findings present an innovative and unprecedented approach to achieving meticulous control over the optical properties and functionalities of nanostructures, opening up new frontiers for nanophotonic applications.</p>