Leah, VJ and Billie clash over finding out the sex of Billie’s baby.
Roo fears for Alf's wellbeing. Alf writes a letter to Duncan finally telling him how he feels.
As a CO2 leak fills the cabin, our beloved Summer Bay passengers pass out and the plane crashes. Alf, Roo, VJ and Zac hear the news and all worry for their loved ones.
Leah decides to go on the flight without Zac. Tori's birthday flight takes off, but are they all in danger?