Two opposing factions of transforming alien robots engage in a battle that has the fate of Earth in the balance.
While protecting an Earth military plant from a Decepticon attack, Optimus Prime is severely wounded. His only hope for survival is a new Cosmotron unit. The good news is that Wheeljack's got one - the bad news is that it's in his lab back on Cybertron.
S1E7 23 min
