Veteran (2015) on Netflix

Plot summary

Seo Do-cheol is a veteran police detective. The death of a truck driver who had protested Sinjin Group over back payment is recorded as a suicide, until the driver's son tells Do-cheol that Jo Tae-oh, the conglomerate's third-generation heir, beat his father. Do-cheol takes the investigation himself. Tae-oh has bought his way out of trouble before and believes his name puts him above the law; enraged that a detective would pursue him, he uses his influence to have Do-cheol pulled onto another case. Through Sinjin's senior vice president, Choi Dae-woong, he offers money to Do-cheol's wife, who refuses it. Learning of the offer, Do-cheol threatens Tae-oh in return.