Belfast based drama `Blue Lights' follows new police recruits Grace, Annie, and Tommy, as they learn the ropes in a high-pressure environment. Grace is a former social worker who has decided to switch careers in her forties, Annie has had to leave everything she knows behind, and Tommy finds it challenging to be on the frontline. The team deal with divided communities, criminal gangs, and struggle to know who to trust, all while wondering if they have made the right choice in joining the PSNI.