Old houses hide many mysteries inside attics and musty basements, under the stairs, behind long-locked doors. When William's father was declared legally dead and he inherited his father's old home, he expected to find his fair share of secrets. But what he finds underneath the remote house is far beyond what he could prepare himself for. What was his father doing there before he vanished? And what had his grandfather been working on when he had bought the house all those decades ago? What is the true legacy that the two men bequeathed to William?