Ella Hampton makes a mayday call from Aurora on the Hauraki Gulf saying her husband has been lost overboard during a jibe (gybe) manoeuvre. A body identified as Dean Hampton washes up with a gash to the head and other injuries. The coroner rules it an accident.
Amy Fagin, Dean's sister, while dealing with her recent diagnosis of young-onset Parkinson's disease, suspects something is amiss. Determined to find the truth about her brother's fate, she convinces Frank Smythe, of the Maritime Police Unit, to investigate the case further. Frank partners with Anahera Raupara to determine what really happened aboard Aurora.