In the depths of the underground coal mines, where danger awaits and darkness prevails, Nam and Việt, both young miners, cherish fleeting moments, knowing that one of them will soon leave for a new life across the sea. But the departure cannot happen as, lying somewhere deep within the earth, in the far-off forest is Nam’s father, a soldier, whose remains they’re compelled to find. Together, following the mysteries of memories and dreams, they retrace the path to the past