While climbing Monument Valley, a tragic accident causes expert climber Annie Garrett to lose her father. Blaming his sister's entreaty for their father's death, her brother Peter Garrett gives up climbing and distances himself from Annie. Years later, Annie, now a respected climber herself, joins billionaire Elliot Vaughn on an expedition to summit K2, the world's second highest and most dangerous mountain. Despite warnings from experienced climber Montgomery Wick, the team proceeds, but a violent storm forces them into a perilous situation.

Trapped in a crevasse, Annie and the surviving expedition members' lives hang by a thread, prompting a reluctant Peter to return to the world of high-altitude climbing to attempt a daring rescue. Gathering a team of skilled climbers, including Montgomery Wick, who harbors personal reasons for wanting to reach the summit, Peter races against time and the elements. Battling treacherous weather, challenging terrain, and their own fears, they embark on a perilous quest to save Annie and the others before it's too late, rekindling familial bonds and confronting past traumas along the way.