Megs Devonshire is brilliant with numbers and equations, on a scholarship at Oxford, and dreams of solving the greatest mysteries of physics. The younger brother she loves with all her heart doesn't have long to live. When George becomes captivated by a brand-new book called The Lion, the Witch and the Wardrobe and begs her to find out where Narnia came from, there's no way she can refuse. Megs soon finds herself taking tea with the Oxford don and his own brother, imploring them for answers. What she receives instead are more stories, stories of Jack Lewis's life, which she takes home to George. Why won't Mr. Lewis just tell her plainly what George wants to know? The answer will reveal to Meg many truths that science and math cannot.