Bill hires a boat and takes the children out to the serene Penguin Island for some bird watching. He sets out alone to catch some fish for their dinner but is abducted by two ruthless men and becomes caught up in a sinister plot involving looted treasure. Back at the camp the four children grow hungry and impatient for Bill's return, worried that something terrible has happened. As the weather worsens they become desperate and befriend a native named Te Ariki to help them track down their missing friend. (thetvdb.com)