What will be there after the end of this race?

An overeducated, disenchanted woman, Ja-young, loses her ambition after many gruelling years of studying for the public official exam. One lonely evening, a beautiful, fit runner, Hyun-joo, glides smoothly past her. Intrigued by this celestial vision of harmony and grace, Ja-young repeatedly returns, hoping to meet the object of her curiosity.