Regina is a lonely young college student. The rest of the students are leaving for spring break, but Regina has no money and no plans. As she is opening her mail, she notices that she has received a mysterious letter telling her that she has won a free vacation at a seaside bed and breakfast, called the Red Wolf Inn. When she calls the phone number in the letter, they tell her a private plane is waiting for her at the airport. The plane takes her to a remote rural destination, where she is greeted by a handsome but odd young man named Baby John Smith. Baby John takes her on a thrill ride, speeding through town and evading the police. When Regina enjoys the chase instead of being afraid, Baby John is impressed.
Arriving at the Inn, she is greeted by Henry and Evelyn Smith, the elderly proprietors of the mansion. They identify themselves as Baby John's grandparents. There are two other guests as well, both lovely young females named Pamela and Edwina. Regina asks to use the phone so she can call her mother, but it's out of order. The group sits down to an extravagant meal, during which Evelyn prompts them all to eat more and more.
That night, Regina goes to the kitchen to look for antacid. She is terrified when Baby John suddenly emerges from the walk-in refrigerator, brandishing a large knife. Her screaming wakes everyone else in the house, and Baby John apologizes for scaring her. Before going back to sleep, Edwina talks with Regina and says she can tell Regina and Baby John are attracted to one another, and Regina admits that it's true.
The next day, Edwina and Regina discover that Pamela has left, but Regina finds a carriage house behind the mansion where Pamela's stylish black dress is hanging. She also discovers a framed photo of the pilot who flew her to this isolated destination. Regina and Baby John share a moment on the beach, where they flirt in an almost childlike way. Baby John reacts violently when he reels in a shark on his fishing line, grabbing the animal by the tail and bashing it against a piece of driftwood. After this bizarre display, he tells Regina "I think I love you," and leaves. That night, there is another party, this time to celebrate Edwina's 'last night', as she is going home the next day. After another huge dinner, the group goes to bed, but the Smiths go to Edwina's room and abduct her before killing and dismembering her.
The next day, Regina is alarmed when Evelyn tells her that Edwina left without saying goodbye. Regina finds the phone in order and calls her mother, but before she can tell her anything, Evelyn disconnects them. A police car pulls up outside the mansion, and Regina bursts out of the house seeking help, but the cop is another grandson of the Smiths. Now realizing she is a prisoner, Regina is left in the charge of Baby John while the Smiths go into town, and she seizes the opportunity to explore the forbidden refrigerator, where she finds the severed heads of Edwina and Pamela. Regina realizes the Smiths are cannibals and she has been eating human flesh for two days. A panicked Regina bolts from the house with Baby John pursuing, but she is caught by Evelyn and Henry returning from their errand.
Regina knows that Henry and Evelyn intend to kill her, but Baby John has a childlike attitude, and thinks they will learn to accept her. At dinner that night, Regina faces an unspoken challenge: The Smiths study her carefully to see if she will eat the meat now that she knows what it is, hence judging if she would actually be able to join their clan as a mate for Baby John. Regina is unable to eat and runs from the table in disgust, and the Smiths have made up their mind that Regina will be meat. Baby John is distressed, and begins hurling dishes around screaming "No!!"
After dinner, he goes upstairs to help Regina escape. They sneak out of the house and try and escape in the car, but Henry has removed the spark plugs. They release their dog on the couple, and it corners them in the greenhouse, attacking Regina. Baby John kills it with a shovel, and the Smiths arrive shortly after. Realizing the dog is dead, Evelyn uses it to distract Baby John by weeping over the corpse, while Henry advances on Regina with a large cleaver. Regina starts screaming in a panic, and blood splatters over a nearby plant.
Baby John is seen sitting at a table in the Inn's kitchen, playing with a toy truck while someone sings a song to him that Evelyn used to sing. We see it is Regina, however, making cookies for Baby John. Meanwhile, in the freezer, Evelyn and Henry's severed heads are stored, with Regina apparently the inn's new chef.
Regina uncovers the true nature of the innkeepers and the fate of the other guests, leading to a deadly confrontation at the Red Wolf Inn.
The ending reveals that the seemingly hospitable Smith family are actually cannibals, preying on young guests lured to their isolated inn. Regina’s survival depends on her ability to outwit her hosts, blending the film’s comedic and grisly elements in a final showdown. The climax underscores the dangers lurking beneath idyllic facades and delivers a satirical take on the hospitality genre, where dinner is always the main course—in more ways than one.