Kenneth Trachtenberg has left his native Paris for the Midwest. He has come to be near his beloved uncle, the world-renowned botanist Benn Crader, self-described 'plant visionary.' While his studies take him around the world, Benn, a restless spirit, has not been able to satisfy his longings after his first marriage and lives from affair to affair and from 'bliss to breakdown.' Imagining that a settled existence will end his anguish, Benn ties the knot again, opening the door to a flood of new torments.