When sea diver Junja convinces her mother to let her go on a trip to the mountains, she didn't mean to fall in love with a mountain boy. Even less so did she expect to return home to find her mother dead, having completed a sea dive herself in Junja's absence. Spiralling in grief, in a Korea still reeling from Japan's withdrawal, Junja must learn to navigate a tumultuous world unlike anything she's ever known.