The film tells the story of Mei Li (Cris Horwang), a thirty-year-old woman feeling desperate about being last among her friends to marry, and her relationship with Loong (Theeradej Wongpuapan), an engineer working on the BTS Skytrain system. The skytrain, which celebrated its tenth anniversary the same year and lends its name to the film's Thai and English titles, is prominently featured throughout the story