In a crossover between the Transformers and the Alvin and the Chipmunks movies, the Decepticons have another plan that involves part of Earth's history, they now need the Chipmunks and the Chipettes and now Sam and the Autobots must team up with the six chipmunks to defeat the Decepticons and Sam must choose between Carly and Mikayla as the chipmunks discover a family secrets.

Book five of the Chipmunk Tour Saga: Team Chipmunk join the Autobots in their ongoing struggle with the evil Decepticons! Combines elements of the 1980s "G1" Transformers cartoon and the 2007 live-action motion picture!