Lassie

It’s "Adopt-a-Puppy" day and Zoe and Harvey host Olive and her father who have come in search of a new family friend.

Olive and her father listen as Zoe relates how she and Lassie were trapped by a forest fire after Harvey had left them to seek help.

Now that Zoe and Harvey are old enough to take part in the Grand Mountain treasure hunt to celebrate the founding of the park, they are determined to win the race with Lassie's help.

It's Harvey's birthday and his mother offers him his maiden flight in a hot-air balloon. Of course, Harvey instantly thinks to invite Zoe along to share his dream-come-true!

When two brothers turn up in the valley in search of their stolen mustang -presumed culprit: a young girl- Zoe realizes it's her new-found friend, who has now suddenly disappeared.

Today is Halloween! Zoe seizes on the opportunity to prove to her mother how grown-up and responsible she is by chaperoning Mrs. Lee's niece on her trip to the neighboring town.

While Harvey is on vacation in the Caribbean for the winter, Zoe has to help her father to secure the park before the arrival of a blizzard.

Zoe and Harvey set out to investigate theft from the park archaeological site. The pair soon finds themselves in big danger.

Zoe decides to pursue the family tradition by winning the Park's legendary blueberry pie competition. To achieve this she has to bring a special personal touch to the family's recipe.

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.

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.

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.

To perpetuate his father's own passion, Harvey decides to enter the photo competition for the Park's Visitor's Guide.

When Lassie spectacularly rescues a herd of escaped zebras, a circus director is so impressed by her performance that he insists that Lassie join his troupe.

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.

Impatient to see her friend Judith again, who has left the valley several years hence, Zoe reminisces about their intrepid adventures in the Park.

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 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.

Graham has to take the helicopter out to search for a reckless snowboarder in danger. Zoe and Lassie set out with him.

After Lassie wards off a dangerous wolf attack, Graham asks the kids to take care and avoid the park for the time being. But then Zoe, Harvey and Lassie discover an injured fox in her yard.

When Graham informs Sarah that the bat colony living in the gulch is behaving strangely, Zoe, Harvey and Lassie set out on a recon mission to find out why.

Zoe's beloved aunt Kim is passing through the valley and surprises Zoe by taking her camping with Harvey and Lassie.

Thanks to Lassie, the children avoid a landslide on the hill overlooking the visitor center. Looking down they realize the building has been damaged.

Zoe, Harvey and Lassie try to stop Samantha and Nick exploring an old gold mine whose access has been re-opened following an earthquake. Zoe and Lassie end up trapped with Samantha.

Harvey enters a science competition and comes up against Samantha whose project has as its centerpiece a family diamond. When the diamond disappears, Lassie becomes the suspect.