Haechi
해치 (original)
Set during the Joseon Dynasty period, the series follows three people from different walks of life who came together to help Prince Lee Geum claim the throne and reform the Saheonbu.
Starring Jung Il-woo, Kwon Yul, Go Ah-ra, Park Hoon, Lee Kyung-young, Jung Moon-sung, Bae Jung-hwa, Han Sang-jin, Park Ji-yeon
It's a drama show, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from Australia.