Results narrated by "Matthew Mann" in All categories

To perpetuate his father's own passion, Harvey decides to enter the photo competition for the Park's Visitor's Guide. When he finds out about his rival - Samantha's- high-tech equipment, Harvey asks Doctor Dudley to tweak his camera to be able to take spectacular photos, even if it means putting himself in danger.

Zoe, Harvey, Graham, Beth and Lassie are forced to interrupt their hike on the valley glacier when they notice that its peak is in danger of collapsing. Later, when Lassie notices Beth's car parked at the foot of the glacier, Harvey realizes that his mother has been hiding something from him. Despite the danger, he sets out to look for her with Zoe and Lassie.

When Zoe and Harvey visit the new dam at the edge of the park, the noises emanating from the construction upset Lassie who refuses to go any closer. When she understands the valley can be flooded due to Nick's error, Lassie has to draw on her inner strength to overcome the stress the sounds of the dam are causing her and save the kids trapped inside the dam.

While helping establish a new nature preserve on the edge of the Park, Zoe, Harvey and Lassie meet the scientist, Doctor Dudley, an eccentric recluse who has recently moved to the valley. Convinced the whole scheme is a fraud, the doctor is reticent about the project and refuses to sell his land to the environmental organization behind the nature preserve.

When a mysterious epidemic breaks out in the park, Zoe is determined to find out as fast as possible what has caused it so that Lassie and other animals don't fall ill. Zoe soon loses patience with Harvey's scientific approach and his insistence on seeking out proof.

Zoe and Harvey are amazed to discover a rare baby white buffalo in the park. The animal's presence has to be kept secret to protect it, but when they realize they have accidentally put two poachers on the buffalo's trail, Zoe and Harvey set out to make amends by preventing the scoundrels from capturing it. And to do this, they can always count on their closest ally: Lassie!

Impatient to see her friend Judith again, who has left the valley several years hence, Zoe reminisces about their intrepid adventures in the Park. But their reunion takes an unexpected turn for Zoe when she discovers her friend is now confined to a wheelchair.

When Mrs. Lee opens a letter that Zoe, Harvey and Lassie bring her, she learns that she is the last living heir to a former mining concession. When Mrs. Lee lets them read her journal from the period, the kids and Lassie set out in search of the abandoned mine to discover the "magnificent treasure" that the journal hints is hidden there.