"Life is relatively simple for the Chipmunks as winter sets in. But then disaster sets in, or at least the beginnings of a great adventure: their tree happens to be on a tree farm, and it is now tall enough to be cut down and sent to the big city in the hopes of winding up in someone's front room. Only it winds up in the workplace, the center of attention for everyone coming into the musical recording studio.One of the hapless individuals passing beneath its evergreen branches happens to be Dave. All he wants to do is sell his music, but his "buddy" Ian makes it absolutely clear that his music stinks, that he doesn't have the voice for it, and he should quit trying to become a composer and find something more worthwhile to do with his life.
Dejected and ticked off at this massive rejection, Dave snatches up a basket of goodies off the nearest desk and makes a run for the front door -- little knowing that he has three hitchhikers along for the ride. Not about to have talking rodents taking over his house, Dave tosses them out into the rain -- and mournfully, shivering, they start to sing. It doesn't take Dave long to realize he has a potential hit on his hands, the Chipmunks to begin scheming how to make Dave part of their family, and Ian to try and figure out how much money he can make off the little fuzz balls."