When workers uproot an old lemon tree at a kindergarten in Gimhae, they expect stubborn roots - not human bones. The discovery rips open a decades-old murder, dragging Inspector Income into the darkest corners of his own bloodline.
The remains belong to Ara, a brilliant young woman whose forbidden love and sudden disappearance in the late 1970s were buried - literally - beneath family silence. As Income follows the trail through Gimhae's orchards, post-war secrets, and his own DNA, he confronts the possibility that the murderer may have been one of his own.
The lemon tree, once a symbol of love and defiance, becomes the silent witness to betrayal, obsession, and the cost of control. Some secrets don't vanish with time - they sour, they linger, and when unearthed, they demand justice.
A chilling tale of family, memory, and the crimes that refuse to stay buried.