Lost in space or a loser in love? Twenty-two year-old Sumire is in love for the first time - with a woman seventeen years her senior. But whereas Miu is a glamorous and successful older woman with a taste for classical music and fine wine, Sumire is an aspiring writer who dresses in an oversized second-hand coat and heavy boots like a character in a Jack Kerouac novel. Surprised that she might, after all, be a lesbian, Sumire spends hours on the phone talking to her best friend K. about the big questions in life; what is sexual desire and should she ever tell Miu how she feels about her? K., a primary school teacher, is used to answering questions, but what he most wants to say to Sumire is, I love you. He consoles himself by having an affair with the mother of one of his pupils. But when a desperate Miu calls him out of the blue from a sunny Greek island and asks for his help, he soon discovers that all is not as it seems and something very strange has happened to Sumire.