This is one of many animated sequels to "Land Before Time". Each one is about dinosaurs.
This LBT will appeal to some but not to others. For people who did not like LBT2 very much at all but like LBT1 and LBT3 a great deal, this will be their kettle of a film. For people who find LBT5 etc too babyish, you will probably like this one quite a lot as well.
As for the actual film, it has the same sort of companionship and teamwork as the first, the second and the third LBT's and you could even say this is less babyish than LBT2. The animation is quite well done, especially the backgrounds. The music is one of the highlights, not repeating and constantly gloomy or happy unlike in some of the other LBT's. The storyline is both exciting and tedious in places, but there is a good adventure. The old characters are pretty much the same, which is good, unfortunately the new character, a longneck called Ali, is pretty much a spoilt, silly character, but luckily improves as the story goes along. The songs are pretty good for a LBT, especially "It Takes All Sorts" and "Grandma's Lullaby". That's pretty much it in highlights and disadvantages... Oh yes - the baddies are a bit silly, but scary enough to entertain people who like very bad villains the the LBTs.
What happens is that outside the valley, the weather and pretty much everything else is changing - for the worse. Meanwhile, a wandering herd meet Littlefoot's grandparents and Littlefoot's grandpa becomes very sick. Along with Littlefoot's new friend Ali, he is determined to find the nightflower in the mysterious beyond, which may be able to cure his grandpa...
Enjoy "Land Before Time IV: Journey Through the Mists."