When photographers Erin and Patrick are brought aboard the ship with their young son Lukas, they unleash a series of events that entwines their family with the ship’s dark past. As the terror unfolds around them they begin to realise there is more to this sumptuous ocean liner than meets the eye: its remarkable legacy masking violent secrets.

Ten years after their divorce, Jane and Jake Adler unite for their son's college graduation and unexpectedly end up sleeping together. But Jake is married, and Jane is embarking on a new romance with her architect. Now, she has to sort out her life—just when she thought she had it all figured out.