This film contains three short stories about life in Australia in the 1950's.

Ten boys and a dog are shipwrecked on an island in the Pacific. After a storm they discover another boat has been shipwrecked on the island. They make friends with two of the survivors, a nurse and ship's carpenter, but discover there are three other survivors who are ruthless mutineers.

In this sequel to Treasure Island, Long John hopes to rescue his friend Jim from a rival pirate and return for more treasure.