Paul Plaige, a former custodian who left under suspicious circumstances, returns in winter with his latest paramour, a woman named Dorothy.
His real reason for returning is to retrieve some precious stones lost in a cave-in that claimed his partner, a woman named Glenda.
Paul sets out to find the stones, with the weather curiously helping him by maintaining a calm area around him.
In fact Glenda is still alive, having merged with a biological network present across the planet, and has been controlling the weather.
Andrew, in touch through Dorothy's wrist communicator, tries to prevent a conflict, but instead Glenda causes his personality to switch places with Paul's.