Lost and Found

Megatron's two deadliest warriors, the three-faced Triple changer Blitzwing and the strong, obsessively loyal Lugnut arrive on Earth looking for their leader Megatron, and tear up the city of Detroit. Optimus Prime and the Autobots battle the highly destructive Decepticons, only to get beaten back by their seemingly endless arsenal of weapons. Megatron, seeing that Lugnut is the most loyal, manages to make contact Lugnut and orders him to obtain Sari's key. With the key they can locate the Allspark, and with that Megatron will be able to return to power. Optimus decides to use Sari's key to repair their ship so that they can get off the planet and lure the Decepticons away from them. But Sari doesn't want them to go and stubbornly refuses to help them, even to the point of sabotaging their ship. However, the Allspark reveals that if Megatron gets the Allspark, he will destroy everyone and everything in the universe. While Optimus and the Autobots battle Blitzwing and Lugnut, Ratchet and Sari reactive their ship's weapons system and blast the pair into scrap. Starscream suddenly appears and promises to save and repair them, but demands them to serve him only.