Overview:Tracking Megatron's unique Spark energy signature, Optimus Prime and Sideswipe arrive at an abandoned factory. Optimus cuts short Sideswipe's chatter to scan the area, but doesn't detect Megatron. Even as Sideswipe complains that the Decepticons seem to be one step ahead of them, Megatron himself rears up behind him and bats the Autobot aside. As Megatron explains, he's been cloaking his spark to remain undetected. Optimus and Sideswipe engage the Decepticon leader in swordplay. Sideswipe cheekily interrupts Megatron's fight banter by stabbing him in the foot mid-sentence. Prime makes an appeal to Megatron to surrender, but Megatron responds by transforming to tank mode and blasting a chunk of ceiling down on the two Autobots. Prime and Sideswipe dodge the falling material, but in the confusion, Megatron escapes. Optimus announces that now Megatron is leaving a trail he can't hide.