An adventure series based around helping animals big and small, fully endorsed by the RSPCA.Cassie, Ben and Dr Joe are on a bushwalk when they bump into a family who have lost their dog. They immediately offer to help, but can't find the poor old dog anywhere. The weather is becoming stormy and it looks as if the search will have to be called off . . . until Cassie hears a small whine from over a cliff edge.