Watch Scary Movie 3 Online

It begins with two friends, Katie (Jenny McCarthy) and Becca (Pamela Anderson). Katie tells Becca that she watched a tape which supposedly kills people seven days after watching it. After Becca and Katie go downstairs to answer the phone, a creepy voice is on the other line. Turns out its Becca's mom wondering how they are doing, Katie goes back upstairs right when the phone goes dead. The Fridge door creeps open and Becca struggles to close it. The toaster then pops and a Parrot squacks and Becca panics and takes her shirt off. She returns and sees Katie drowned and purple sitting in a chair; Becca however, is oblivious that her friend is dead, even when Katie's head falls off. At the last second, the TV turns on and Tabitha, the ghost girl, leaps for Becca.

In a farm outside Washington D.C., Tom Logan (Charlie Sheen) is woken up by a little girl screaming, and accidentally bumps into a lamp after getting up. Tom goes outside to investigate the screaming and he meets up with his brother George (Simon Rex), who tells him the dogs are acting strange (the dogs are playing Julius Ceasar, smoking a waterpipe and riding a tractor). After both men look inside the corn field they discover the crop field has a huge crop circle in it. After seeing the circle, George asks "what do you think it means?" even though when it's shown from above the circles are shown to be a huge arrow with a sign pointing to the farm that reads "ATTACK HERE".

In Washington, news anchorwoman Cindy Campbell (Anna Faris) argues with her boss about the sexual content the news show reports, and she even goes as far as opening her top and revealing her breasts in a small blue-ish grey bra to show there's nothing interesting about them. After her problem at work, Cindy goes to pick up her nephew Cody (Drew Mikuska) at school, who according to Cindy's friend and Cody's teacher Brenda Meeks (Regina Hall) has been having visions. Then George Logan arrives to pick up his niece and winds up inviting Cindy and Brenda to a rap-off he's going to participate in. Back in the Logan farm, Tom is told by a friend that he was the trucker who accidentally crushed Tom's wife, Annie Logan (Denise Richards) into a tree and killed her. After this George prepares to leave for the rap-off, Tom tries to talk him out of it, but he fails. George, angry that his brother tried to pull him out of his dream, screams at Tom when he gets on the bus, and the door accidentally locks itself on George's face.

At the rap-off George meets his old friends CJ (Kevin Hart) and Mahalik (Anthony Anderson) who are going to be the rap-off judges since the original judge, Simon Cowell (played by himself) was shot dead by the audience when he gave another rap battle a horrible review. George is pitted off against Fat Joe (played by himself) and he wins, but he puts on his hood (which resembles a Ku Klux Klan uniform) and gets thrown out of a window by the audience. Cindy goes to Brenda's house that night and Brenda tells Cindy that she watched the killer tape last week and that she needs protection for the night, Brenda then suddenly has a heart attack, but it turns out to be a prank by Brenda. After many more pranks, Tabitha the ghost girl comes out of Brenda's TV and Cindy doesn't believe Brenda when she tells her. However, when Tabitha drips water on Brenda's new carpet she gets pissed off, then starts fighting with Tabitha (and winning) until she knocks Brenda over and strangles her. Cindy then goes to where Brenda is and finds her dead behind the couch.

At Brenda's funeral, Cindy gets the killer tape which Brenda watched and takes it home with her, also George mistakes The Wake as Brenda is not dead and tries to revive her with a lamp's wires, only blowing up the body and he gets thrown out the window by the mourners. Cindy takes the tape back home and watches it after that she gets a call from Tabitha who tells her she will die in seven days. Cindy asks Tabitha if holidays count since Martin Luther King day is coming up, the voice says Martin Luther King day is not a real holiday and Cindy contradicts her which annoys Tabitha who says "Geez lady ,I'm giving you seven damn days, if you want I can just come up there and kill the shit out of you right now!" and hangs up. She calls George, who is with CJ and Mahalik at the time, and they rush to her apartment. CJ comments his Aunt Shaneequa is an oracle and she could help Cindy. She goes to see her and leaves George to look after Cody. Aunt Shaneequa (Queen Latifah) and her husband Orpheus (Eddie Griffin) agree to help and Cindy gives them a copy of the killer tape. After watching a segment of it Aunt Shaneequa discovers a backmasked picture of a lighthouse and then gets into a fight with a woman from the video, but she tells Cindy to go find that lighthouse from the tape.When Cindy returns home, she finds George knocked out (who was playing Yatzee with Cody and got five equal dice, then he got up and bumped his head on a shelf) and Cody who has just watched the killer tape.

At work Cindy looks through various pictures of lighthouses and finds the one in the tape, but she leaves the tape behind and her boss grabs it. Cindy arrives at the lighthouse where she meets The Architect (George Carlin) who tells her the real story of Tabitha and how the killer tape got out in the world, The Architect had rented Pootie Tang but accidentally returned the killer tape in Pootie Tang's box. He also says that Tabitha was their evil daughter and that his wife drowned her in the family's farm well while he thought a time-out would have worked. Meanwhile in the White House, President Harris (Leslie Nielsen) and his main agent, Agent Johnson (Ja Rule) beging worrying about the Alien Invasion warnings that Cindy Campbell had given in the news show and after destroying a Mother Teresa award ceremony believing that a lot of people there were Aliens in disguise, Johnson and President Harris go to look for Cindy in the Logan Farm. Upon arriving home again, Cindy discovers that her news show has broadcasted the killer in the airwaves for hours and now several people are in danger, she thinks things out and decidees to go to the Logan Farm where she knows the aliens will land. In the Logan Farm, Tom has everybody in the house go into the basement for refuge while he, George and Mahalik go outside to fight off the aliens. Suddenly, two aliens sneak up behind Mahalik, Tom and George when Secret Serviceman Jones and President Baxter Harris arrive and accidentally run them over. Baxter tells them he came looking for Cindy since he claims that she may hold the key in defeating the aliens. Baxter then notices the UFOs mistakening them as the Air Force in those "new round planes." Just as the UFOs get closer, CJ arrives with an army of rappers and among them are Master P, RZA, Raekwon, Method Man, Redman, Macy Gray and U-God. However, they have an argument and shoot each other dead.

After that, the aliens strangle Tom, George, Mahalik, CJ, Baxter, and Secret Serviceman Jones, Mahalik breaks free and knocks the head off of one of the aliens claiming "without their heads, they're powerless." The aliens' leader (voiced by Tom Kenny who also voiced the other aliens present) talks and reveals they came to earth because they need to kill Tabitha since they watched the killer tape, believing it to be Pootie Tang. When Mahalik asks why they were choking them, the aliens explain that strangalation is how they say hello. When George asks how they say goodbye, an alien kicks him in the balls. Showing more of their oddity, one of the aliens shows them that they pee through their pointer finger which disgusts Tom at the moment that one of the aliens put his pointer in his mouth. President Baxter Harris quotes that the humans and aliens aren't that different after all and he pees through his pointer finger.

In the basement, Cindy recognizes a shot from the killer tape and then makes a hole in the wood and she finds the well where Tabitha drowned; suddenly Tabitha appears behind her. George goes to look for Cindy and then finds Tabitha attacking her, after a short battle Tabitha pretends the curse to be broken so she can attack them (Cindy: "So you won't be evil anymore?" Tabitha: "Nah, I'm just screwing with ya!") but as she prepares to attack, President Harris opens the door behind Tabitha and knocks her into the well. (President, not realizing what he just did: "I just wanted you to know, we're all counting on you") George seals the well and the curse is over. George and Cindy get married with everybody, including the aliens and Aunt Shaneequa, in the ceremony. As George and Cindy drive away they accidentally leave Cody behind. When they back up the car they are about to hit Cody but stop just in time; however, a car coming from another direction hits Cody and throw him through the air as the movie ends and the credits roll.