As the Scout sails from England, Kit Lovell cries for the life she is leaving and the life she could have had. Her father was a sea captain who went down with his ship before she was born. Now her mother is to marry a stranger, a lighthouse keeper in the remote colony of South Australia.

But it soon becomes clear to Kit that this voyage across the world's vast oceans is setting something loose inside her, something she doesn't understand. Her secret encounters with Angel, a mysterious young sailor, seem at one moment completely bewildering and at another crystal clear. And her friendship with the bold and brash young Clarissa is opening her eyes in ways she never thought possible.

Yet Kit's internal turmoil is nothing compared to the power of the sea in all its moods as the Scout's melting pot of passengers and crew sail into an adventure that will change all their lives forever.