Former sweethearts reunite at an archeological dig in the Great Smoky Mountains National Park. As they work together competing for the same research grant, they discover they might still have feelings for one another.

Assistant curator Lauren travels to Zion National Park to prove that a set of ancient vases belongs with the Pueblo Nation. During her mission, she meets Adam, a native Puebloan park ranger, who becomes her helpful companion.

Heather, an expert in avalanche forecasting, brings her new technology to Glacier National Park where she faces push-back from the Director of Mountain Rescue who's trained in intuition and common sense.