Pass-through takes place in big, crumbling house in Vermont or New Hampshire over the course of two days in October 2023. The denizens of the house - a woman named Catherine, her two children and mother in law - fight frequently as they try to collectively come to terms with the death of Catherine's erratic husband two years prior. They rarely talk about him and have not cleaned out his office yet at the start, but when they do a whole lot of unwelcome feelings and memories will be coming at the family very quickly.