With all the gazillion planets in the galaxy to choose from, the warring Cybertron races of "Autobots" (the sort of goodies) and "Decepticons" (the sort of baddies) descend on Earth in search of a missing cube. This "allspark" - landed on our planet aeons ago and for many years has been unwittingly in the custody of the always competent US military and their "Section 7" operatives - currently led by "Simmons" (John Turturro). Now it transpires...