Seventy-seven Kilometre.

Hailan, a passionate off-road enthusiast, decides to join a cross-country race on the Wushen Grassland to escape the mounting pressure from her career and personal life. Through her interactions with local youth, she gains a deeper understanding of the Mongolian region, gradually discovering the true meaning of off-roading and of life itself. As Hailan begins to let go of her burdens, her spirit is renewed, she grows as a person, and she forms lasting friendships along the way.