Toni Donovan is teaching a summer class at a community college in Springfield, Missouri. During a family reunion at Sequiota Park, her youngest son discovers a body in the lagoon, and then her colleague, John, recognizes the victim as a member of the summer graduate class he is taking. When the police question her child, who has a history of dreaming and finding things, Toni enlists the help of her youngest brother, who is a member of the local police...