When Eliza and Debbie discover an old treasure map on the Galapagos Islands, they set out to claim their ""riches."" Once the gold is discovered, however, greed sets in and the girls begin an all-out battle of trickery to get the gold away from each other. They battle continues all the way down to the last coin, until they accidentally lose all the gold in a fiery lava pit.

Eliza finds a hero in a giraffe who can see distances with his height and warn others of approaching danger. However, to Eliza's dismay, the giraffe leaves the animals for his own needs. Only when Eliza herself is in danger does the giraffe return and realize his selfishness.

The Thornberrys meet the Fensterkopfs who make false documentaries. The Fensterkopfs' kid lies to Eliza and gets them all stuck on a cliff. After the families barely escape an avalanche, the value of truth is learned by all.

To study and protect the snow leopards from extinction and a construction site that is threatening their survival, Nigel's mentor (thought to be lost for many years) has left civilization to be a yeti. Eliza discovers his identity, helps him fend off the construction workers, and reunites him with her father.

After Eliza saves an arctic hare from a determined stoat, she learns that underdogs come in all shapes and sizes.

Eliza goes to desperate measures to help animals survive during tough times along the Skeleton Coast. Her good-will intentions, however, will soon cost her family their entire supply of holiday cheer--and their Christmas dinner!

When Donnie kidnaps an aye-aye for a pet, Eliza must return the ""bad luck"" omen to his home before the villagers hunt him down.

Eliza reunites with a Siberian Tiger, and is stunned when the tiger turns on her. Eliza's visiting Grandma Sophie helps her overcome her fears just as she is overcoming her own.

The Thornberrys are invited on a cattle drive by Marianne's old high school friend whose son, Miguel, is not as adept at riding and roping as he claimed. In the end, Eliza helps him build confidence.