Police response officer Chris is struggling to keep a grip on his mental health and marriage when he is offered a path to redemption in the form of a young heroin addict.

Chris plans to hand the drugs in, until Carl makes him an offer he can’t refuse. Rachel strikes a deal with Mullen, but Chris' behaviour makes her feel conflicted.

Chris is trying to get better and go straight, but when DCI Barnes tricks him into doing a dodgy car stop, he is drawn into a drug war between two of Liverpool’s top dealers.

Chris and Rachel are on the hook to Franny, and the only way to fix it is to pay him. Chris’s solution? Get money from Jodie for picking up a bag of drugs from the docks.

In accepting a new flat from Franny, Chris becomes fully corrupt. His first job – to deliver Casey. But will Chris cross the line and hand Casey over to impress his new boss?