The Thornberrys are in Japan near Mount Fuji to film the Asian black bear when Marianne's parents visit to spend their 50th anniversary with them. Grandpa Frank has had health problems recently and has problems acting his age. Eliza, Darwin and Grandpa Frank go off to climb Mount Fuji.
Home video releases
- The Wild Thornberrys: Season 3
- The Wild Thornberrys: The Complete Series
| "Gee, this is harder than I thought."|
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