The Emerald Atlas

After years in an orphanage, Kate, Michael, and Emma are moved into Dr. Pym's mansion — only to discover the house holds a secret: their father left them a magical book called the Emerald Atlas that lets its owner travel through time. When they accidentally open it and find themselves transported to 1920s Cambridge Falls, they must outrun an evil witch hunting for the same power while unraveling a prophecy about what each of them is destined to become.