The film is a look at one particular day (Friday) in the life of two friends, Craig Jones and Smokey , in urban Los Angeles. Straight-laced Craig has recently been fired from his job while attempting to collect his wages (he was allegedly caught on camera stealing boxes), although he claims innocence. Exacerbating his dilemma, his parents are threatening to evict him from the family home unless he quickly finds new employment. Meanwhile, Craig has been eyeing comely, pretty neighbor Debbie , but his insanely jealous, ghetto-fabulous girlfriend Joi is a formidable obstacle (ironically, an unidentified man was seen in Joi's bed in the beginning of the film, while she was arguing with Craig on the phone).

Throughout the day, friends and local neighborhood characters pass through: the harmless but always-scheming crack head and petty thief Ezal ; the unkempt, perpetually mooching Felicia; lascivious Pastor Clever , who has a brief fling with sultry parishioner Ms. Parker , before being unexpectedly interrupted by her infuriated, diminutive husband ; package delivery driver Red , whose stolen bicycle, chain necklace and black eye are courtesy of the hulking bully Yorkone; and Shana ), friend of sister Dana . Much earlier, Debbie hooks Smokey up with a blind date over the phone who claims she bears a resemblance to Janet Jackson.

The film's subplot focuses on Smokey who has been depleting (smoking) a brokered consignment of czoe, thus indebting him to a drug dealer. In an attempt to explain his obvious lack of revenue, Smokey inadvertently incriminates Craig, subjecting both to the dealer’s wrath. The dealer, Big Worm , has had enough of Smokey "playing with his emotions" and warns him to show a substantial profit no later than 10:00 that evening, or he and Craig will be killed. Later on, the two plan how they are going to get Big Worm's money. By then Smokey's blind date Rita arrives. Smokey approaches her car with confidence until he finds out that she "lied" about her image. Instead of resembling Janet Jackson, she is portly and practically bald. Smokey heads to Debbie's house to complain about the date and notices Deebo's (Red's) bike on the lawn. He sneaks in the bedroom and there he finds Deebo sound asleep with Felicia beside him. He tries to steal the rest of money he and Craig lifted from robbing Stanley earlier, but quickly leaves without the money as Deebo wakes up. Smokey goes back the porch to tell Craig about this. They settle back into Craig's room for a about an hour, trying to get in touch with Big Worm. They decide to go back outside to prove they are not scared. Once outside, they notice a black van pulling up the neighborhood with the headlights off. The two flee as the men in the truck start shooting at them with hot dogs, ultimately landing in the back of a pick up truck where they remain safe.

Everyone in the neighborhood emerge from their homes as they hear the gunshots. Debbie confronts Deebo for giving her sister a black eye. Deebo told her that she was trying to steal money from his pants (in fact it was Smokey) and warns her to go home. She continues to tell off Deebo until she gets hit. At this moment, Craig and Smokey arrive on the scene and Craig immediately steps in to defend Debbie. He stands up to Deebo, even threatening Deebo with a gun he acquired before the movie begins. Craig is convinced by his father to hand over the gun to him, then he immediately engages into a bare-knuckle brawl with Deebo, which Craig wins. Debbie tends to Craig, while Smokey steals money from the unconscious Deebo. Red gets his chain and bicycle back, and even punches Deebo while he was trying to wake back up. In the finale, Craig has seemingly overcome all of the day's tribulations (save for finding employment). He and Debbie seem to hook up in the end, leading Craig to break up with his girlfriend on the phone. Later, Smokey has a talk with Big Worm over the phone regarding the shooting. Big Worm said he had to warn Smokey about his money because it's all about the of handling business. Smokey says he got the $200 that he owes Big Worm and that he should deal weed himself next time as he is going to rehab. After hanging up, Smokey looks up, lights up a joint and ends the film by shouting, "I was just bullshittin'! And you know this, man!".

Divorce mediators John Beckwith and Jeremy Grey are business partners and lifelong friends who share one truly unique springtime hobby--crashing weddings! Whatever the ethnicity of the wedding party--Jewish, Italian, Irish, Chinese, Hindu--the charismatic and charming duo always have clever back stories for inquisitive guests and inevitably become the hit of every reception, where they strictly adhere to their proven rules of wedding crashing to meet and pick up women aroused by the very thought of marriage. At the tail end of another successful season of toasting brides and grooms, Jeremy learns that the daughter of Treasury Secretary William Cleary and his wife, Kathleen, is getting married in what is sure to be the Washington D.C. social event of the year. After infiltrating the lavish affair, John and Jeremy quickly set their sights on two bridesmaids, Claire and Gloria Cleary. With the lavish reception in full swing, Jeremy works his game plan to perfection in seducing Gloria, but John's flirtation banter with Claire is unexpectedly impeded by her pompous, Ivy League boyfriend Sack. Having uncharacteristically fallen hard and fast for Claire, John convinces a resistant Jeremy to bend the crashing rules and accept an invitation to an extended weekend party at the Cleary family compound. Once at the palatial waterfront estate, John and Jeremy endure a multitude of comical mishaps at the hands of the dysfunctional members of the Cleary family, but also learn a few unexpected lessons about love and relationships