Set in contemporary London, Hard Sun centers on detectives Robert Hicks and Elaine Renko, partners and enemies who seek to enforce the law and protect their loved ones in a world that every day slips closer to certain destruction. Hicks is a family man and a great, committed officer. He's also profoundly corrupt. Renko is a difficult and damaged, but utterly incorruptible officer. Thus, the two cops stand on different ends of the social and moral spectrum and also seriously distrust one other – and for good reason. But they must somehow learn to work together if they're going to survive until the end of the world.