The Land Before Time X The Great Longneck Migration is a 2003 directtovideo animated adventure musical drama film and the tenth film in the Land Before Time series.
Meanwhile, Littlefoot meets his father, Bron Kiefer Sutherland, for the first time in his whole life. However, Bron isnt alone. Since parting from his now deceased wife a song from The Land Before Time IV Journey Through the Mists reveals that the concept of marriage does exist in The Land Before Time universe, he has become guardian to a young Brachiosaurus, Shorty, who becomes jealous of Littlefoot taking all of his fathers attention. Brons story is a long one. He left to find a new place to live before Littlefoot hatched and returns to find that the Earthquake had destroyed everything he soon learns about the death of his wife. In search of Littlefoot, he finds Shorty among other seemingly orphaned longneck children. Bron, realizing his son is not with them, continues his search, however the children stay, gradually forming a bigger and bigger herd. Eventually the many longnecks who joined the herd recognize Bron as their leader. They were drawn to the crater in the same way as Littlefoot and his grandparents.The ceremony is then revealed to be an event in which the moon overlaps the sun. On the day of the eclipse, Littlefoot wakes to spot Shorty sneaking over the crater walls and running away out of spite for being ignored by Bron. He catches up to Shorty and convinces him to stay the two reconcile and agree to see themselves as brothers. Moments later, Littlefoot spots his friends and Pat approaching and is shocked that they travelled so long to find him. Suddenly a trio of Sharpteeth arrive and attacks the group. Pat defends the children but his injured leg slows him down. Bron wakes to find his son absent from his side and comes to a realization as he hears screaming from beyond the crater walls. He rushes to their aid and defends them from the Sharpteeth, shortly accompanied by Littlefoots grandparents. During the fight the eclipse occurs and the sudden darkness bewilders and scares away the Sharpteeth. Littlefoot, his grandparents, Bron and Pat take their
Source: Wikipedia