123Movies. Documentary filmmaker Sun Hobin takes a bold step into the world of investing by launching his own stock-focused YouTube channel. Riding the wave of a post-pandemic bullish market, Hobin, who has enjoyed effortless financial gains, decides to invest in shares of a company called ‘Sajo Industry’. However, this seemingly lucrative venture unravels a hidden facet of the Korean capital market, exposing Hobin to the shadowy underbelly that exists beneath the surface.