In a diamond mine in northern Canada that operates under an ongoing threat of combustible methane gas, a spark ignites, causing an explosion and leaving a group of miners trapped underground with only 36 hours of oxygen left. Down-on-his-luck ice road veteran Mike McCann, along with his younger brother, Gurty, join a hastily-assembled team of skilled ice road drivers who embark on a dangerous rescue mission.
Their job is to drive across an ocean of thin ice in eighteen-wheeler trucks to deliver lifesaving drilling wellheads to the mine before the oxygen runs out on the trapped miners. Unbeknownst to the team, the operators of the mine plant a rogue assassin amongst them in order to sabotage the mission and keep the miners from revealing the truth – that the company had long conspired to let the mine run unsafely.
To save a team of miners trapped underground, a down-on-his-luck ice road trucker (Liam Neeson) joins a mission across treacherous terrain to deliver rescue equipment, unknowingly stepping into a plot of sabotage and murder.