Antonia is devastated to learn that her best friend Cai might be moving to Australia?will he have to give up being a Silver Dolphin for good?
�
It's the spring holidays and there's a surprise visit from Cai's parents from Australia. Now he faces an impossible choice?does he move to the city so he can still visit Antonia but give up
being a Silver Dolphin, or does he learn to answer the call in Australia without his best friend? Meanwhile, a minke whale keeps getting stranded in the estuary. Antonia and Cai join forces
with the local fishermen and the coast guard to try to save the whale, but it keeps returning. Can there be another reason for its strange behavior? And could this really be the end of the
Silver Dolphins for Cai?