Arcadia Lost tells the story of two teenagers stranded in rural Greece after a car wreck. Charlotte (Haley Bennett) is a sixteen-year-old with a deep desire to find connection who hides behind a sullen disposition and her newfound sexual power. Sye (Carter Jenkins) is her recent stepbrother, introverted, intelligent, but forever at an ironic distance from the world through his camera and caustic wit. As they wander the dusty roads and staggering vistas of the Peloponnese, they come across the vagabond philosopher-drunk Benerji (Nick Nolte), an ex-patriot American who is an odyssey of his own. They reluctantly adopt him as their guide, and begin an adventurous journey toward the mystic waters on the sacred flanks of Mount Parnassus that takes them through a landscape both ancient and modern, forcing them to confront the truth of their past and the frightening, beautiful reality of their present.

维克多（瑞沙德•斯垂克 Reshad Strik 饰）曾是一名优秀的冲浪运动员，却在职业的最巅峰因为膝盖受伤而不得不告别了赛场。他将自己对冲浪运动未尽的愿望全部都寄托在了弟弟杰西（拉奇兰•布坎南 Lachlan Buchanan 饰）的身上，这种强烈的期望常常让杰西感到痛苦不堪。福格斯（沙维尔•塞缪尔 Xavier Samuel 饰）是家中最小的一个，虽然他对冲浪也有着强烈的热情，但这种热情却总是被哥哥们忽视。
一场意外中，维克多和杰西之间冻结多年的坚冰终于得到了化解。而福格斯也遇到了名为安迪（柯克•詹金斯 Kirk Jenkins 饰）的男孩，安迪所散发出来的雄性荷尔蒙深深的令福格斯感到着迷，而他的出轨却让维克多十分的痛苦。

一次健康危机迫使这名成功的美食作家重新思考自己放纵的生活方式，她积极地踏上康复之旅 — 哪怕这简直要了她的命。