I'm becoming more and more convinced that Adam Sandler's career started off as a bet. He hasn't actually been in any good movies. He's just famous. I think people finally realized how much he sucked when he did Little Nicky.
Ok, so here's how it goes. Satan (Harvey Keitel) is coming up on his 10,000th anniversary as Prince of Darkness, and he is thinking about joining his father, Lucifer (Rodney Dangerfield) in retirement. Satan has three (3) sons, Adrian, Cassius, and Nicky. Adrian and Cassius are both vying for the throne, and Nicky is Adam Sandler. So, Satan sits them all down and tells them that he will not be retiring because he doesn't think his sons are ready to take on the responsibility. As you might expect, the two brothers are mighty pissed off, and they decide to make a new Hell of their own, on Earth. (Cue scary music.)
Now, when the two brothers leave Hell, they freeze the gates so that no soul can get through. Satan, of course, needs new souls to survive, so he starts to fall apart. Literally. Something must be done, and the only one who can do it is, yep, you sure guessed it, Adam Sandler. He has to go to Earth and trap his brothers inside a special magical flask so he can return them both at the same time.
Here's where we learn all about Adam Sandler. First of all, he's only the half-brother to Adrian and Cassius. He also has a speech impediment from getting hit in the face with a shovel. And there's something wrong with him. He's too nice to be a devil. More on that later.
So, Adam Sandler goes to the surface where he is immediately hit by a train and sent back to Hell. Unfortunately, he's able to return to Earth. Damn. Anywho, he meets a dog named Mr. Beefy, and Mr. Beefy teaches him how to be human. He gets an apartment and meets a couple big fans of Satan. He also meets Valerie, the ugly pretty girl, played by Patricia Arquette. A bunch of stupid crap happens too, and none of it has any bearing on the plot. In fact, not much of the movie has any bearing on the plot. Surprisingly, there is an actual plot.
So, where was I? Oh yeah. He captures Cassius in the flask and had to go after Adrian. He actually gets Adrian and returns to Hell, but the writers overlook the whole point of the story to make the movie worse. Meanwhile, Adam Sandler has saved Valarie's life, so he goes to Heaven, where he meets his mom (Reese Witherspoon) who is an angel. She had met Satan at a Heaven/Hell mixer, and, well, you get the idea. Anyway, she gives him the proverbial magic orb that he'll "know when to use". He goes back to Earth and Adrian has started to take things over, and it's all a mess. Adam Sandler and Adrian face off. Adrian uses his powers of evil, and Adam Sandler uses his powers of good, and everything goes as you'd expect. Finally, Adrian transforms into a bat, and Adam Sandler remembers his magical orb. He does something with it to make it work, and Ozzy comes out. Ozzy grabs Adrian, bites his head off, and spits it into the flask. Nicky takes the flask to Hell, and Satan becomes whole again. He sends Adam Sandler back to Earth to be with Valerie.
The only worthwhile part of this movie is the bit with Ozzy, and that's only funny after seeing The Osbournes on MTV. Little Nicky was a horrible horrible movie.