A meteor shower rockets through open space. Four glowing pods are seen hiding behind the meteor shower. Suddenly the meteor shower makes a hard right and heads towards a distance planet Earth.
In a Michigan suburb, Stuart Pearson (Kevin Nealon)and his wife Nina (Gillian Vigman) head a family that includes seven-year-old Hannah (Ashley Boettcher); 15-year-old techno-geek Tom (Carter Jenskins) and oldest sister Bethany (Ashley Tisdale), who's just returned from a secret outing with her boyfriend Ricky Dillman (Robert Hoffman). Deciding the family needs some good old-fashioned togetherness, Stuart takes them to a holiday home in the middle of nowhere. Joining them is Uncle Nate (Andy Richter), Nate's son Jake (Austin Butler), Nana Rose (Doris Roberts), and identical twins Art (Henri Young) and Lee (Regan Young). Ricky also arrives unexpectedly and talks his way into staying overnight.
That night dark storm clouds swirl around the house. Suddenly, the four glowing pods land on the roof. An alien crew emerges, made up of Skip (J.K. Simmons), the tough commander, Tazer (Kari Wahlgren), a muscle-bound dude armed to the teeth, Razor (Thomas Haden Church), a lethal female alien soldier; and Sparks (Josh Peck), a four-armed techie, who is the only non-threatening intruder. Since the aliens knocked over the satellite dish Ricky and Tom are sent to fix it. Ricky then reveals to Tom that he lied about everything so far, his car didn't break down, his parents don't own a lake house, he's a lot older than 18. Ricky is actually in college and is five years older than Bethany. They find the satellite is beyond repair. Investigating further they discover the aliens. Skip tries to lull Tom and Jake into a false sense of security, but fails. Ricky is captured and implanted with a mind control devise. The aliens, called "Zirkonians", via Ricky, lay claim to the planet (when asked why they didn't just say it themselves Skip responds, "This way is more fun.") Like a puppet/robot, Ricky grabs the boys - but Tom and Jake break free. Alien invasion strikes..an adventure film.