This book tells about the adventures of a girl named Lena Shishkina who lives in Moscow. She goes on amazing trips, saves bats, treats a little turtle for homesickness, and gets into funny or dangerous situations at school, during vacations, and in a theater circle. At first glance, all these events seem like troubles and unpleasantness—but in reality they are the brightest and most unforgettable moments of her childhood.