They thought they were safer on the ground... they were wrong.
Immediately picking up after the events of 2023's Horizon, and it's 2024 prequel 'Ransome', a battle of revenge, revelations, and survival comes into play between Roman Knight, Drusilla and Harry Ransome; a man who should have been dead over 150 years ago.
But with everyone so worried about the ravenous creatures above them in the darkness of the Expanse, they fail to realise that something far deadlier lurks beneath the ice. Something which has kept Harry Ransome alive all this time. Something sentient. Something which has been growing for centuries.
And now, it wants to evolve... and it's hungry.