Set in Philadelphia, "The Underground Kings" centers around police corruption and criminal underworld. It starts in Harrisburg as undercover cop Jayson Wylie is shot and left for dead in a botched drug bust. His partner Noah Carter learns information from a DEA Agent Daniel House from Philadelphia, whose been investigating the overdosing death of his wife, that this shooting was not accidental, but a set up. Philadelphia Police Lieutenant Jack Wilcox whom is an advisor to the Harrisburg Police Departments Narcotics Division tips off Smooth, one of Philadelphia's largest crime bosses, that his enforcers Rashaad and Will are about to be taken down by Jayson and his team. Smooth alerts them about the drug bust and they attempt to eradicate the problem. Agent Daniel House is successfully able to talk Noah into going undercover in Philadelphia to expose the police corruption in the city, take down Smooth's criminal empire and avenge both his wife and Noah's partners shooting. As Noah ...