After various strange happenings, such as gigs not knowing who they are, and their images fading from their latest CD cover, the Chipmunks get a visit from Clyde Crashcup who had inadvertently created time travel in his blender which he fashioned into a machine to send them all back to 1957, where Alvin's past self is doubting his talent and is considering dry cleaning as a career instead of music. After a brief montage video of time travel to the theme of "Back in Time," Alvin, Simon and Theadore travel back to 1957 and manage to convince themselves to travel to the future in order to experience the life that they were successful in building. However, their past selves decide to stay in the future, causing the Chipmunks' CD to change to depict their past selves in the place of their success. Clyde comes back and brings Alvin and his friends back to confront their past selves. Unwilling to leave, Alvin challenges himself to a Battle of the Bands contest where the winner will stay in the present and the losers will go back in time. After a tie, Alvin manages to convince his 50's self that the only way to build the future properly would be for them to return to their own time. After a fond farewell, the Chipmunks restore themselves to the proper time line.