The daily lives of the men and women at Sun Hill Police Station as they fight crime on the streets of London. From bomb threats to armed robbery and drug raids to the routine demands of policing this ground-breaking series focuses as much on crime as it does on the personal lives of its characters.

Julien and Agatha appear to be a great couple, loving, caring and seem to feel complete with each other. Though Julien often gives the impression of being interested in other girls, his lover doesn't care all that much and sometimes even looks like she's encouraging him to do that. It all changes when they meet an American woman who'll change their lives and their perception of love.