Shaw Brothers is mostly known for their kung fu films, but they did occasionally try things outside of their wheelhouse namely Mighty Peking Man and Super Infra Man. Super Inframan is your basic rubber suit monster battle but filtered through the lense of Hong Kong kung fu flicks complete with bad audio syncing and out of place sounding impact shots. In terms of plot.....Image if you had an entire seasons worth of Power Rangers plots squished into 90 minutes and compressed the storytelling into about 20 minutes filling the rest with action scenes. The movie is non stop action and unapologetically silly and if you're a fan of silly monster movies or kung fu flicks you'll find something to like. Just don't expect much of a coherent narrative.
Review of Infra-Man
