In one of the nicest nurseries in the world there were beds for three young people called John Napoleon, and Wendy Moira Angela, and Michael, the children of Mr. and Mrs. Darling. The nursery was wide and airy, with a large window, and a bright fire with a high fire-guard round it, and a big clock, and prettily-coloured nursery-rhyme pictures over the walls. It was in many ways a most interesting household. For one thing, although there was a pretty little parlour-maid called Liza, the children were bathed and dressed by a big dog called Nana, whose kennel was kept in the nursery. On the evening on which our story begins, Nana was dozing peacefully by the fireside, with her head between her paws. Mr. and Mrs. Darling were getting ready to go out to dinner and Nana was to be left in sole charge of the children. Presently the clock went off with a whirr, and struck—one, two, three, four, five, six—time to begin to put the children to bed.