Mara Vance runs her guiding company on one rule: safety first, every time, no exceptions. It's not the flashiest way to run a business, but it's kept her clients alive since she took over from her father three years ago. Jonah Reyes runs Summit Edge Adventures the opposite way — fast, bold, whatever gets the best photo. He and Mara have been rivals for two years, mostly because he thinks her approach is overcautious and she thinks his is going to get someone killed. Then a booking mix-up puts them both at the same trailhead, leading the same eight clients up the same route. Neither one is willing to walk away from the paycheck, so they're stuck sharing the trip — her rules, his pace, four days, one shared tent when the weather turns bad. Somewhere between the arguing and the near-disasters, the rivalry starts cracking. Mara sees what's actually behind Jonah's charm. Jonah sees why Mara holds onto her rules so hard. By the time the trip's over, they're not just co-guides anymore. The trip ends. The rivalry between their companies doesn't. Now they have to figure out if what happened on the mountain is real enough to survive back at sea level — or if it was just the adrenaline talking.