Penelope Keeling is reaching her early seventies and has suffered a mild heart attack. She decides it is time to reflect on her life and to mend the troubled relationships she has with her three children. But she has not counted on the revealing power of her beloved painting 'The Shell Seekers'. When her children discover that the family portrait is a valuable commodity, Penelope begins to see a new and ugly side to their personalities. Do they really care about her? Or are they too wrapped up in themselves? Penelope is forced to make some difficult decisions about what is important to her, and what is best for her children.