Mother Father Sister Brother Frank

At Jerry Enrico Colantoni and Joy Jennings’ Sunday family dinner with their adult children Jolene Melanie Leishman and Jim Iain Stewart, the tension is palpable. Dad is focused on alcohol, Jim is preoccupied with mobility, Jolene isn’t drinking, and Joy Mindy Cohn keeps the conversation flowing to fill the silence. Secretive undercurrents ripple through the room as each family member guards private concerns.

Jolene hides in the upstairs bathroom to avoid Joy gushing over her ‘babies,’ while Jim follows, noticing she is hiding something. When Jolene confirms her pregnancy, she asks after Jim's husband Pete Izad Etemadi; Jim deflects.

Meanwhile Joy and Jerry discuss how to share their own news: he wants to tell the kids right away, but she wants the perfect moment. Jolene and Jim return before they can agree. Suddenly, uncle Frank Juan Chioran knocks, and Jerry's older brother is immediately antagonistic—rude to everyone, he recounts his journey from Mexico, where he lives to avoid the police, having traveled by bus with a fake ID to further evade them.

Jolene and Jim try to chat, but Frank mostly makes negative remarks about his nephew's sexuality. Joy brings out the banana breeze pie she baked to soften the blow of losing the house; after Frank extols the pie’s virtues, Jolene demands he reveal why he is really here. The parents argue with Frank outside, while the kids are asked to serve the pie.

Before the parents return, Jim reveals to Jolene that he is getting divorced from his husband Pete. The parents enter alone and, painfully, explain. As their travel agency had been doing poorly for a decade, they permitted someone to launder money through it. Frank found out, so he has been blackmailing Jerry.

Frank gleefully announces he is taking both the house and the 5 million that Joy and Jerry earned from the laundering. Everyone has to pack their things that evening. Frank said he would only back down over his dead body, so plants the idea of killing him, both in Jolene's and her parents' minds. He is downstairs, throwing out family mementos, as the others are upstairs, starting to plot their revenge.

Jolene gives Frank an opportunity to redeem himself. She suggests he take the cash but leave them the house. Frank admits he mostly seeks revenge against Jerry, who he has envied for over 30 years. Jolene gives him the Lorazepam-dusted pie, which he devours.

Joy smashes a lamp over Frank's head, then Jerry tries to strangle him. She then pushes Frank down the stairs. Angry, he tries to strangle Jim, who defends himself by raising his right hand laden with the pie knife, which Frank walks into. As he succumbs to his wounds, his hand catches the pie tin and it falls on his face.

Jolene and Jim are horrified at their role in Frank's demise, but a gleeful Jerry praises them. He and Joy soon after sneak off and have sex, which Jolene sees. Appalled, she hurries upstairs and slips on Uncle Frank's pool of blood.

Jolene's pregnancy is accidentally revealed, annoying her as she has not decided yet. Meanwhile the neighbor appears, seeking her dog. Afterwards, Jim starts dismembering the body in the basement. His ex Pete soon appears, making a scene. Jolene lets him stay so he stops disturbing the neighbors. Jim and Pete finally resolve their differences, when there is a knock at the door.

A police officer has come for a noise complaint, so insists on entering. Tarps are blocking the dining room, so they explain they are renovating. The neighbor's dog appears with the arm it found in their basement, but the family manages to keep it from the officer. He is suspicious of what is going on, so Joy decides to 'confess' by weirdly explaining what happened without telling the truth.

Finally, Pete convinces the officer to not call back up, then leads him out to 'give him a ride home'. But he returns, to remind them they owe him big time. Pete therefore expects they will do a murder mystery activity another Sunday.

Everyone comes together, stripping the dining room walls and scrubbing the floors. Jim chops up the body so part can be frozen and they can start to burn the rest. Everyone becomes closer.