The healing tree

Three children at summer camp discover that in a past life they fled from an evil woman who tried to steal their blood and their powerful connection to nature, and now she is at their camp, so they soon time travel 900 years to a Pueblo village where Baba, the camp's caretaker and an avid Egyptologist, helps the young people develop their skills and work together as they try to thwart the evil woman's plans to rule the world.