Suzanne does some unauthorized research on a new kind of grain that will grow in any climate. The billionaire who invented wants to sell it to the world. Thinking poorer countries will be given money by richer countries. But the aliens have their own plans for the grain, after placing a new deadly poison in the grain, they take over the body of the billionaire who suddenly offers it free to the world.

The Blackwood team consults with noted linguist Adrian Bouchard (Cedric Smith) to decipher the aliens' transmissions.