The Land Before Time V: The Mysterious Island (Video 1997) - Plot Summary Poster


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  • When a swarm of "leaf-gobblers" devours all the green food in the Great Valley, the herds move on to find another valley of greens and in the process, Littlefoot and his friends Spike, Cera, Petrie and Ducky wind up on an island in the middle of the Big Water. They're reunited with Chomper...Along with his nasty, hungry parents.


The synopsis below may give away important plot points.


  • After a cloud of Swarming Leaf Gobblers (locusts) descends upon the Great Valley, devouring all plants and leaving it a barren wasteland, the inhabitants must seek another place where they can survive until the plants in the Great Valley have grown back. However, the Swarming Leaf Gobblers have left a path of devastation behind them, leaving no food for the dinosaurs to find. After erring for days and days through this desolation, the herd quarrel and threaten to separate. The main characters do not want to be separated, so they set out to find a location with plentiful food. They leave a trail for the grownups to find them with, and eventually reach the "Big Water" (ocean). There, they see a verdant island connected to the mainland by a thin land bridge. On their way, an earthshake (earthquake) occurs, which they narrowly escape, and which wipes out the bridge.

    Isolated on the island, they try out Cera's idea to return by using a log as a boat (which made her seasick). However, a "swimming sharptooth" (resembling a Cretoxyrhina shark) attacks, and in the confusion and fright which follows, they end up on the island again. That night, they remember their families, while the herd, who followed the trail, sleep on the shores of the beach on the mainland, worrying for them.

    The next morning, the children wake up to the shadow of a Sharptooth. They take off, but find themselves cornered by high cliffs. They huddle together when the sharptooth approaches, only to find that it is Chomper (from The Land Before Time II: The Great Valley Adventure). He then helps them to hide from his parents, who are also on the island, and provides them with food upon their request. However, an overcautious Cera openly displays distrust to Chomper because he was a Sharptooth, which grieves him, and he departs. Littlefoot follows him and apologizes, but is interrupted by Chomper's mother. She nuzzles him, then leaves, presuming Littlefoot is prey. Littlefoot is intrigued by her display of love to Chomper.

    Meanwhile, another Sharptooth living on the island (resembling a Giganotosaurus) finds the children, and gives them chase. Chomper tries to help, but the Sharptooth overcomes him. His parents then come and battle the Sharptooth near the edge of the island, during which he falls into the Big Water and takes Chomper with him. Littlefoot plunges in to save Chomper while the sharptooth is swept away by the current. The "swimming sharptooth" returns, but they discover it was an Elasmosaurus named Elsie then saves the two from drowning. She returns them to the island, where Chomper's grateful family promises never to harm the children. Still, the gang miss their families, so Elsie offers to take them across the sea, making Cera even more seasick than before. They say their final goodbyes to Chomper, and board Elsie. When back on the mainland, they find out that the herd found a lush, green, little place on the shore to stay in till the Great Valley is green again.

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