Fifteen-year-olds Tilly, Fran, Marlee and Pink are surfer girls. They have been meeting for the first surf of the season every year since they first met at the surf school run by Tilly's dad, Phil, when they were eight. Phil has big plans for the surf school this year, but when he is injured in a hit-and-run accident, everything suddenly seems uncertain. While Phil languishes in hospital and the police track his attacker, Tilly is determined to realise his plans and keep the surf school open. To do this, she needs all the help she can get from her friends. But Marlee is training for the surfing competition to win a new board and beat the moody Kyle, Pink is warring with her parents and intrigued by the stranger Kim, and Fran is busy making jewellery. As the girls negotiate their relationships, tensions and friendships, the summer is set to explode!