Three months after Joe, Nats, and Cain disappeared in the island's only boat, a mysterious flying machine hovers above the community they left behind. Eva must choose who to trust, and who to put first - her children, or her partner Sandra. Four days ago, Joe left Nats in a barn near Dover and didn't come back. Still nursing an injured ankle, Nats must decide how long to wait, where to go if she doesn't, and whether to trust the neut...