"I, William James Archibald, being of sound mind and body, do hereby declare this my last will and testament. To my beloved grandchildren, Alastair, Aurelia, Julian, Carver and Ophelia, I leave the entirety of my estate, to be divided equally amongst the five of you." "However," Mr. Harris, the lawyer continues, his voice gaining gravity, "this inheritance comes with one condition. Before my assets are to be divided, each of you must spend six consecutive months living together here, at Arcadia Manor." [ Extended synopsis inside ]