Coach driver Peter Green lives a life of ordinary routine: clip-on ties, limp packed lunches and vehicle checks. It is summer, Green is at full stretch and struggling to cope with his disaffected daughter Kayla and his ailing mum Joy. Overworked and overwhelmed, Green is driving a group of pensioners to visit War Graves in Dunkirk with his co-driver Squeaky Dave. But the discovery of a dead body on the docile Bognor shoreline and an unsettling meeting throws Green's life into chaos.