Left with an aching instinctual itch to explore America after a traumatic loss, a curious teenager named Mercer suddenly steals a car in Oregon and develops a life-altering telephonic connection with the forgiving and mysterious girl he took it from. As he sets out with her phone calls as guidance, Mercer's motives find focus as he travels across the postmodern highways of the former Wild West to seek self-knowledge and a sense of belonging. Played with truth and nuance by Lou Taylor Pucci, young Mercer follows the clues and confronts struggles, both good and bad, on his spiritual journey toward manhood and an end to his grief.