The only thing colder than the Antarctic air is the icy chill of death.

Off the frigid coast of McMurdo Station, in waters untouched by man, a deep-sea discovery is made—something ancient, intelligent, and deadly.

Aboard a classified DARPA research vessel, scientists are harvesting a never-before-seen species of Antarctic octopus. Its sub-zero venom could revolutionize warfare: a painkiller that numbs without side effects. But nature was never meant to be weaponized.

When a brutal storm slams into the vessel, all hell breaks loose. The onboard lab is destroyed. Containment is breached. And in the aftermath, one of the team’s top scientists begins to change. His mind unravels. His body no longer fully human.

Now, stranded in the most isolated place on Earth, the crew must survive something far more terrifying than the cold.