A live action, big screen outing for everyone's favourite Chipmunks - Alvin, Simon and Theodore. Discovered and adopted by struggling songwriter Dave Seville (Jason Lee), the dynamic trio decide to join forces and embark on a singing career, performing Dave's songs. When success beckons however, unscrupulous record company boss Ian Hawke (David Cross) decides that he could make a lot more money from the boys if Dave was out of the picture.