Love is not a flaw in the system. It's the architecture of the world.For Penelope Lowell, a razor-sharp London lawyer, emotions are statistical noise, and love is a critical flaw. Her world is defined by the unyielding architecture of law and the clean burn of ambition.But when she inherits her great-aunt's derelict manor, Sunlit Grove, she is pulled into a quiet English village that defies her logic. There, she is confronted by Rhys Penrose, a brooding bookseller who serves as the estate's Guardian.Rhys is hostile, believing Penelope-the cynical, city-born heir-will sell the property to developers. But when Penelope's sight abruptly awakens, she sees the world transformed: a hidden tapestry of luminous threads-the "heartlines"-weaving together every bond of life and love.She is the new Seer, and the thread between her and Rhys, the one she cannot logically explain, is the key to a lineage sworn to protect the land. When a powerful multinational corporation, Omni Corp, moves to acquire the Grove to "bottle" its unique energy, Penelope must abandon her life of cold logic to fight a battle of magic and will. She must discover how to mend a broken world and choose the messy, beautiful path of a Guardian's Thread.