A deadly virus is bearing down on the world and Emerson Mackenzie, CEO of PharmaScience Technologies—now back in its ancestral home of Port Kenneth, Tennessee—opens up the historic Mackenzie house on the family's defunct sheep farm to six people: himself, his wife Tess Cartieri, his house manager, two members of his board of directors, and his executive assistant, Taylor Alexander.

Taylor won't abandon Emerson, but at the same time, they don't want to be there. Taylor has secrets, a past and memories they cannot face, and they fear that being locked in a house with five others will be entirely too revealing.

Taylor's passion is to be outside, hiking, in a world that makes sense to them, and Emerson harnesses that, asking Taylor to map the boundaries of the old sheep farm and maybe help discover secrets buried on the land. Taylor is glad to do so, although the secrets they help Emerson and Tess discover are immediately darker and more disturbing than any had expected.

As the virus rages, as tensions across the country simmer, as relationships within the house change, and as the land gives up its secrets, Taylor realizes time has grown short. Their secrets cannot remain hidden any longer.

When they spill, Taylor is exposed for all in the house to see.

And every person inside the house responds in ways Taylor never expected.