16. Skippy and the Polluted River

Unexplained death of a fish and a kangaroo poses a few questions and it's suspected that the river is being polluted. Kate's grandfather Bill, a farmer, stages a one-man demonstration at the local paper mill against the polluters. However, Skippy, Lou and Jerry discover something unexpected. The twins also learn that in the environment war, everyone must take care of his own little corner of the world.