For a moment there is shocked silence in the cave. Then Buster realises what has happened. "My father!" Buster cries. "The Decepticons have kidnapped Sparkplug!"

"Those filthy Decepticons," says Ironhide. "I'll -"

"You'll do nothing," says Ratchet. "Your powers are depleted."

"I still have plenty of fuel," says Bumblebee. "Come on, Buster, let's go find him!" Bumblebee may be the smallest Autobot, but he's always big on courage!

"I'm coming too," says Blaster. "It's about time Starscream faced the music!"

"The rest of the Autobots will refuel," says Optimus Prime. "When you have found Sparkplug, radio Autobot headquarters. We'll come at once!"

The other Autobots prepare to return to headquarters. And Blaster prepares to go with Buster. In three seconds he has transformed. He now looks like a tape deck. He and Buster get inside Bumblebee's car body and set off in the direction of Decepticon headquarters.

Buster looks up at the sky. "There is no sign of them," he says.

Continue.