While Erickson is assessing the danger caused by timber washed away by a flood, he allows former ranger Peterson to take Lassie on his boat to survey crab cages where Peterson is knocked unconscious with a storm approaching.
Newly conscious Peterson due to rough seas, timber debris and his condition cannot prevent his boat from drifting toward cliffs but Erickson drops seaward from a helicopter to contact a rescue boat which saves Peterson and Lassie.
A man pursuing wolf bounty shoots a wolf in protected territory and then watches Erickson and Turner nurse the wolf back to health with help from Lassie who uses the creature's paternal instinct to gain recovery.
When Allan surveys an old Air Force bombing range to develop as a grassland, his helper, who is partially buried by a landslide, dislodges an old unexploded bomb which Allan must disarm via remote instructions from the ranger station.
Lassie attempts to rescue a fawn that has become trapped in a vinyl reservoir that is part of an experimental water system constructed to rescue the cattle business of a lady rancher that leases from the forest service.