chunk: In Edwardian London, 1910, Cockney one-man band Bert is entertaining a crowd when he senses a change in the wind. Afterwards, he directly addresses the audience and gives them a tour of Cherry Tree Lane, stopping outside the home of the Banks family. George Banks returns home from his job at the bank to learn from his wife Winifred that their hired nanny, Katie Nanna, has left their service after his children, Jane and Michael, ran away "again". They are returned shortly after by the local constable, who reveals that the children were chasing a lost kite. The children ask their father to help build a better kite, but he dismisses them. Taking it upon himself to hire a nanny, George advertises for a stern, no-nonsense nanny. Instead, Jane and Michael present their own advertisement for a kinder, sweeter nanny, but when George rips up the letter and throws the scraps in the fireplace, the remains of the advertisement magically float up and out into the air.