The mother of a large family is abandoned by her children and faces consignment to the poorhouse. But one of her offspring, the one no one had faith in, returns to rescue her.
In the quiet family town of Suburbicon during the 1950s, the best and worst of humanity is hilariously reflected through the deeds of seemingly ordinary people. When a home invasion turns deadly, a picture-perfect family turns to blackmail, revenge and murder.
A psychotic man opens fire in a diner, murdering numerous people before killing himself. The survivors struggle in different ways following this horrendous event: a doctor doubts his own instincts and elects to use an experimental medical procedure on his wife, while a gambler believes he's on a lucky streak. A waitress begins engaging in promiscuous sex, and a young girl whose father is among the dead gains unexpected fame.
A Marine veteran working as a school janitor tries to mend his relationship with his son after a divorce. When his son is killed by a police officer found innocent without standing trial, he takes matters into his own hands.