South Korean auteur Chung Ji-young returns for the first time in four years with the crime flick “The Boys,” another work based on a real-life high-profile case. The new film follows “Unbowed” (2011) and “Black Money” (2019), which dealt with the true stories of a professor who went against a corrupt Korean judicial system in 2007 and the 2012 sale of the Korean Exchange Bank to Am.