Plot
It is the holiday season, and the Whitfields are celebrating together. The matriarch, Shirley Ann "Ma'Dere" Whitfield (Loretta Devine), and her boyfriend, Joe (Delroy Lindo) are joined by her 6 children: eldest child, Quentin, Jr. (Idris Elba) a musician who is always on the go and has not been home in 4 years, much like their father (Shirley's ex-husband) who abandoned them; eldest daughter, Lisa (Regina King), a housewife, her cheating husband, Malcolm Moore (Laz Alonso) and their two kids Tori & Keshon; the uppity one, Kelli (Sharon Leal), a Harvard grad visiting from New York; Claude (Columbus Short), a U.S. Marine; baby girl, Melanie "Mel" (Lauren London), seven-year college student accompanied by her boyfriend, Devan (Keith Robinson); and the youngest of the bunch, Michael "Baby" (Chris Brown), a photographer and aspiring musician.
It is Christmas Eve and everyone is starting to arrive for dinner at 6:00. Problems arise soon after when Malcolm prompts Lisa to suggest that they should all give up their share of their family-owned dry cleaners. Everyone else is against it and an argument breaks out between Lisa and Kelli as a result.
Soon after, Quentin arrives, and he talks to his family at the dinner table; upon seeing Joe, he becomes cold and rude towards him. In the kitchen, Mel informs Devan about Ma'Dere's ex-husband "Senior", who left the family to pursue a musical career. Quentin finds Joe and threatens him again. When Joe leaves, Quentin plays Senior's piano in the garage. Claude attempts to sneak off to a club, causing Kelli, Quentin, and Mel to join him. They witness Baby singing "Try a Little Tenderness" there, the family is astonished to find out he can sing. Kelli and Gerald (Mekhi Phifer) meet and have an instant attraction. Claude loses his temper with two men who attempt to hit on his (unbeknownst to the rest of the family) wife, Sandi (Jessica Stroup), and he pulls his gun out at the club, causing the Whitfields to flee.
At the house, Baby convinces his siblings to keep his singing talent a secret until he confronts Ma'Dere himself. The next day, the men look for a Christmas tree. Meanwhile, Kelli, Lisa, and Mel wrap presents and Kelli confesses that she slept with Gerald. Mel encourages Kelli to enjoy her fling while Lisa chides her for being reckless. At the airport, Lisa becomes suspicious of Malcolm, who has to leave because of issues at his "job". Lisa comes home with Mo and Dude, 2 bookies who are owed money by Quentin. They attempt to beat him until he tells them that a police car is nearby.
Claude is arrested and Lisa and Quentin go to the station to fix the situation. Ma'Dere scolds the family for not cooking dinner or getting prepared for Christmas. When Lisa and Quentin return, they tell everyone that Claude is AWOL and the family is shocked to meet Sandi, who is revealed to be Claude's wife. Mo and Dude take advantage of Quentin by eating with his family. Sandi privately explains to Mel why Claude is AWOL and eventually admits that she is pregnant. Meanwhile, Quentin confronts Ma'Dere about her relationship with Joe and why no one told him that she and Senior were divorced.
Outside, Kelli talks to Lisa about the events that took place, and Lisa also tells her that even though she did not get a college degree, she had to help their mom with the dry-cleaning business when Kelli went to Harvard. Kelli admits that Malcolm is cheating; Lisa confesses that she already knows. Kelli says that 'sharing her man with another woman is pathetic', leading to a fight between Lisa and Kelli in the rain. When Mel breaks up the fight, she tells Kelli about Sandi's pregnancy and that Claude does not know about it. In the meantime, Lisa angrily totals Malcolm's car when she drives it into the Los Angeles River. Gerald arrives and spends the night with Kelli. Baby gives Quentin a scrapbook of Christmas pictures before he leaves. Baby finally confesses to Ma'Dere that he wants to be a singer, but she refuses to listen.
Quentin goes to the train station but is ambushed by Mo and Dude; Joe shows up to defend him. Joe gives the bookies $10,000 to get them to leave Quentin alone, and they do. Despite Joe's pleas, Quentin boards his train. The next morning, Kelli asks Gerald to come to visit her in New York. Malcolm returns and Lisa decides to do something about his cheating. She persuades him to take a shower while she covers the floor in baby oil. When he asks about his truck, she confronts him about his infidelity, lures him out of the shower onto the slippery floor, and beats him repeatedly with a belt. Afterwards, she meets Kelli on the porch before church and lets her know that he left, that she is filing for a divorce and starting over.
At church, Baby sings "This Christmas" and Claude arrives at the church after being released. After the church service, Quentin returns and reconciles with Joe and his family. The cast members are seen dancing to "Got to Give It Up" (via a Soul Train line) before the end-credits roll.
