Tattooing in South Korea was illegal for 33 years for non-medical professionals, leading to a vibrant underground culture. Despite legal risks, around 350,000 tattoo artists operated clandestinely, expressing their art and defying societal stigma. The documentary 'Angels' showcases the lives of these artists, highlighting their struggles and aspirations. Recent legal changes now allow non-medical tattoo artists to gain formal recognition, but social stigma remains a challenge. The filmmakers hope this will lead to broader acceptance and rights for tattoo artists.