A college student from the United States visits Japan during her spring break and accidentally steps into a sleep café in Tokyo. Out of curiosity, she buys a 30-minute nap, which makes her want to start her own business and open a sleep café back home. The future entrepreneur starts exploratory online research about nap cafés, which reveals a growing global sleep industry termed "sleepenomics." Having collected some valuable data, the student now plans to analyze it and develop a successful business model to tailor a nap café to the sleep-deprived culture of her country