On the top floor of a lovely old Parisian apartment building in the Avenue des Temps Perdus lives the slightly odd Mademoiselle Oiseau. No one knows exactly how old
she is. In fact, since she never leaves her house, nobody really knows her at all. Sometimes, though, one can catch a glimpse of this elegant lady with her unkempt curls and
endlessly long pearl necklaces when she’s out on her terrace amid her countless cats and birds.Isabella is a 9-year-old girl who lives in the apartment
under Mademoiselle Oiseau’s. She is so unremarkable that she’s practically invisible. One day, when Isabella comes home from school and gets in the elevator, she
accidentally presses the number for the sixth floor rather than the fifth. She doesn’t even realize her mistake until she sticks her key into the lock and
Mademoiselle Oiseau opens the door.When Isabella and Mademoiselle Oiseau meet, a wonderful friendship begins. They spend their days together exploring Mademoiselle Oiseau’s roof garden, as
well as her apartment full of mysteriously changing rooms, or—to the amazement of everyone—making it snow on a spring day. Soon, Isabella has become a much braver, more confident girl.
