A rumour surrounds an old house. Send a letter, and if it's chosen, a mysterious ticket will be delivered to you.

No one is more surprised than Serin when she receives a ticket inviting her to a market that opens once a year when it rains. Here she's offered to swap her life for another. A better one.

The problem? She has one week to find the perfect life and true happiness, or she'll be trapped inside the market forever. Accompanied by Isha the cat, Serin searches through bookstores, hair salons and perfumeries before time runs out.

All while a shadow follows quietly behind them . . .