Well you didnt miss that much.
The film is as follows: Tom Cruise wears Ray Bans, rakes the lawn, parents go away, he turns the stereo up and dances around in boxer shorts, has a party, meets a girl, someone trashes his father's porsche, he gets the girl, he gets into trouble re porsche and ends up having to do a lot of leaf raking.
That is from memory – others may fill me in on any details missed!