A young botanist relocates to a small desert town to study an invasive plant species. While out on research, she comes across a downed plane and finds herself taken captive by an inexperienced drug mule who forces her to lead a trek across the sweltering desert to his drop. A local sheriff is drawn into the hunt as his rebellious daughter sets out to find the missing botanist, all the while being pursued by a local drug receiver. She must survive the relentless desert heat, miles of unforgiving terrain, and a team of ruthless cartel contractors in order to make it back home.