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The flight has to make an emergency landing. On the first leg of their trip, via plane, Theodore, holed up in cargo, sets loose all of the animals who then rampage down the aisles, parrots, goats, monkeys, freaking everyone out. The four set off on a crazy trip from California to Miami, to track down their parents and bust up the proposal before it's too late. They find an unlikely ally in this attitude in Miles, who doesn't want a new dad at all. Miles is awful, he couldn't be their brother! The chipmunks also have abandonment issues, fearing Dave will no longer love them if he got married.
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While the chipmunks like Shira, they are terrified that Dave is going to propose to her while on a trip to Miami. On a group outing to play miniature golf, the mischievous chipmunks meet Shira's teenage son Miles (Josh Green), who makes jokes about super-Gluing them together. He is dating a new woman named Shira ( Kimberly Williams-Paisley), and he wants the chipmunks to be on their best behavior when they finally meet her.
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Dave, after the Birthday Bash Gone Rogue, lets them know he is extremely disappointed in their behavior. The chipmunks are Alvin (the ringleader), Simon (the glasses-wearing nerd), and Theodore (the roly-poly tag-along), voiced by Justin Long, Matthew Gray Gubler and Jesse McCartney, respectively. "I've got a barn, let's do a show!"), or of those old comedies where the forces of anarchy bust up snooty drawing room parties, "Alvin and the Chipmunks: The Road Chip" embraces mayhem. Reminiscent of The Muppets road trip in " The Muppet Movie," or of the musicals of Judy Garland and Mickey Rooney (i.e.
ALVIN CHIPMUNK MOVIE
While there's a lot that is gross (literally: fart jokes, poop jokes, crotch-hits, burps, urine, etc.), the whole point of the movie (and it's great that it has a point at all, considering the material) is that it is a series of random events where the chipmunks either incite a riot or calm one down with their music. Of course it's silly: a chipmunk is hanging onto the rim of a skateboard as another chipmunk bumps and grinds on lawn furniture below. After that, the plot creaks into gear, but the opening party represents what is best about the movie: it's pure mayhem and it's entirely silly.
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Dave finally gets home (he saw news of his party trending on Twitter), throws everyone out and gives the chipmunks a good scolding. All of this happens before Dave even arrives. A half-pipe is erected in the backyard and skateboarders careen through the air. In the opening scene of "Alvin and the Chipmunks: The Road Chip," Alvin, Theodore, and Simon, the three chipmunks, throw a surprise birthday party for their dad/legal-guardian Dave ( Jason Lee).
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