As you state in your description, the movie package description is very inaccurate and we found the movie quite depressing and as you say, not that enjoyable. Will probably not watch anymore and will get rid of it.
I liked this DVD. There are no gory scenes, but there is suspense and action. Lassie outshines all the other actors, but they are still pretty good in their roles. The old miner should have really been an old man; the beard looks fake. Other than that I didn't see any problems. This movie takes me back many decades and the TV and movies back then. That is a definite plus, plus, plus.
This movie is not for children! The scene of the dog intimidating a man over a cliff to his death is not my idea of wholesome family show. My children ages 2,4,7,9 all had nightmares about evil dogs. Don't waste your money!