Susannah Misselthwaite was gazing up at the brightness of the blue sky when the deer leapt in front of the car. She never knew what happened. Her husband Guy, Professor of Botany, hides from his grief in his greenhouse - without Susannah, everything is lost. Meanwhile, little Felix pores over photographs of his mother who is slipping from his memory more each day. Happiest sitting in the branches of a tree in the university's botanical garden, away from the emptiness of home, he presides over the dreams and dramas of those who pass beneath him. Teachers and students, young and old, happy, sad or filled with longing, all find sanctuary and space for contemplation in this few square feet of soil.