Rob Hamilton, a disaffected insurance lawyer, and Toni Haast, a quietly ambitious claims clerk, are sent to Exmouth, a small town on New Zealand's West Coast, to investigate the suspicious death of Artemis Washburn.On family holidays in Exmouth, Rob's father had filled his young son's mind with ideas of the fifth season - the time when things don't quite fit, like rain when it's sunny. As they delve into the truth behind Artemis's death and their relationship develops, Rob and Toni glimpse life in the fifth season. Meanwhile, back in Wellington, the gilded life of Andy Wu, the Dependable Insurance Company's stellar CEO, starts to tarnish. Can his marriage to Samantha survive his jealousy of Owen Huntly, top salesman and Lothario?Against a background of modern corporate culture and a tragic death, this bitter-sweet comedy weaves stories of love and relationships, ambition and folly.