Login to unlock this video.
If you don't already have an account, sign up to enjoy more TVNZ content anytime, anywhere.
MV Bellamy leads the charge investigating a potential way home; Clarke and Madi deal with the new, uncertain threat to their home.
Earth is the greatest enemy, so how will Clarke and the others survive?
Titles, characters and all other elements are the trade marks and copyright of TVNZ or its licensors. All rights reserved. Further details available here.