An Australian man is spending Christmas with his ex-wife's in-laws, Jim and Lucy, because his home has been destroyed by the wildfires that now threaten Jim and Lucy's home. Help is on the way, but it becomes increasingly clear that it won't arrive in time. A man who calls himself the Doctor has arrived to help out. He arranges a complicated contraption and enlists the help of the man and his ex-relations. As the fires get closer, the man's bitterness at his divorce and ruined home threaten to get the better of him, but he benefits from a pep talk by the Doctor.