Sirens! A scary sound, especially to Siria, whose brave Pop is a firefighter. Siria loves everyone at Pop's city firehouse. She also loves to study the stars. Her mother named her after the brightest start in the winter sky. When Siria hears sirens, she sneaks out to chase the trucks, to bring Pop and the other firefighters luck. She'd be in big trouble if she ever got caught. Good thing her best friend, Douglas, is always by her side. As Christmas approaches, Siria suspects that someone in the neighborhood is setting fires.
Mary Draper knows she is a normal, gap-toothed schoolgirl--until her sleep disorder is brought to light, she dreams her cat can talk like a toff, she learns how to use the camera obscura and wishing steps, and she rescues her Victorian friend, a suspected jewel thief. The reason: Mary Draper can time travel!