At 3 years old, Jack is the youngest of the three Robinson children. He is well behaved and minds what his parents and older siblings tell him. He grows to be independent and fearless as his sister while on the island. He spends his times collecting rocks, learning his numbers, and playing with his animal friends.

10-year-old Flone is a very active, tomboyish sort of a girl. One day, her father receives a letter from his English friend who is now in Australia. In the letter, the friend asks her father to come down to Australia because of a serious shortage of doctors. The family decides to leave their old house in Bern. Now their drifting voyage has begun! <br><br>
Flone's fantastic adventures will teach children about the importance of family and the joys of living amidst nature's beauty.

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Jannik Endemann is a german radio play and voice actor.

Jack Robinson