A 63 year old biologist, blind since childhood, collects snails and shells in Africa. His self-imposed isolation is shattered after he is credited with saving the lives of an American woman and a native eight year old girl who are both suffering from malaria. The venom of a cone shell provides the cure. Strangers flock to the scientist’s abode hoping to find their own miraculous remedy, but instead a few discover tragedy or even death.
The biologist’s own adult son dies from a cone shell bite while visiting his father. In the end, the shell collector is also bitten by a cone and experiences both paralysis and clarity in his near-death condition. He survives with the aid of the young girl whom he had earlier cured of malaria.