Almost a year after the death of his wife, former high-tech executive Ian finds a letter that will change his life. It contains Kate's final wish-a plea for him to take their ten-year-old daughter, Mattie, on a trip across Asia, through the countries they had always planned to visit. Eager to honor the woman they loved, Ian and Mattie embark on an epic journey, leaving notes to Kate in "wishing trees" along the way, and encountering miracles large and small. And as they begin to find their way back to each other, they discover that healing is possible and love endures-lessons that Kate hoped to show them all along...