The disaster - A tidal wave has swept across Petrel Island. Houses are destroyed, people injured, homeless... or worse. The rescuers - Dr Grady Reece leads an Air-Sea Rescue team to help the isolated community and finds dedicated doctor Morag Lacy in charge.

Morag and Grady once had a blazing affair and a brilliant future, before she left him to be the island doctor. Grady has never stopped loving her - but she'll never abandon her duty. Could this be his chance to win her back?