A young American couple, Michael and Cathy who have just graduated from college, go to a Greek island for the summer and are dazzled by the beauty and the freewheeling nature of the locals. When Michael meets Lina, who is in Greece from Paris doing archaeological work, he is enamored with her. Cathy, unhappy about Lina getting close to Michael, confronts the woman -- only to be unexpectedly wooed by her charms as well.