Mariona, a 33-year-old Spanish woman living in Melbourne, Australia, wonders why she is still single. More importantly, she wants to understand why her relationship status prevents her from fully enjoying her life. In an effort to explore the stigmatic effects of spinsterhood, she decides to set off on a journey across the globe, documenting the lives of four single women in four different countries (Australia, China, Turkey and Spain). As she embarks on the trip, it becomes clear that despite cultural differences, singlism is a universal problem for women over thirty, and that she is not alone.