In 1897, Mrs. Sarah Hargrave, a beautiful widow, and two young children (one of whom is the son of the castaways from the original film) are cast off from the ship they are travelling on, because the ship's crew are infected with cholera. After days afloat, a sailor (Kearney) who has been sent with them tries to kill the children. Sarah angrily kills him, using a harpoon, and dumps his body overboard. The trio arrives at and is stranded on a beautiful tropical island in the South Pacific. Sarah tries to raise them to be civilized, but soon gives up, as the orphaned boy Richard was born and raised by young lovers on this same island, and he influences the widow's daughter Lilli. They grow up, and Sarah educates them from the Bible, as well as from her own knowledge, including the facts of life. She cautiously demands the children never to go to the forbidden side of the island.
When Richard and Lilli are about eight, Sarah dies from pneumonia, leaving them to fend for themselves. Sarah is buried on a scenic promontory overlooking the tidal reef area. Together, the children survive solely on their resourcefulness, and the bounty of their remote paradise. Years later, both Richard and Lilli grow into strong and beautiful teenagers. They live in a house on the beach and spend their days together fishing, swimming, and exploring the island. Both their bodies mature and develop, and they are physically attracted to each other. Richard loses the child's game Easter egg hunt and dives to find Lilli an adult's pearl as her reward. His penchant for racing a lagoon shark sparks a domestic quarrel; Lilli thinks he is foolhardy, but the liveliness makes Richard feel virile.




i thought it was blue lagoon was this caus