While some families extend invitations, these in-laws prefer to issue ultimatums. This Maine household features a father-in-law with a long memory for grudges and an even longer record at the liquor store, a mother-in-law whose passion for clutter has turned every bedroom into a storage unit, and a home where the only thing more suffocating than the mess is the atmosphere. Moving in is less about joining a family and more about signing up for a social experiment in endurance.