In the early 1960s, Sandy, Boo, Scollop and Robbie drive to the beaches north of Sydney for a surfing weekend. The boys are planning to give Sandy a memorable ‘one last fling’ before his impending marriage. Tension flares between university-educated Sandy and ocker Boo when Sandy decides not to join in the fun. At a local dance, Boo seduces Caroline, the teenage daughter of a caravan park owner who discovers what has happened and comes looking for Boo with a gun.