Rory and Jam uncover toxic dumping close to home and Margo goes up against an unscrupulous neighbour whose greed threatens the valley.

The discovery of a boy who had been raised by animals may shed light on Rory and Margo's past.

Cassius, a school dropout, falls in with the wrong circle of friends. Miles Gunther, a supervisor for Dutton industries, gets on Margo's nerves as he questions her management principles.