Megatron was laughing and not paying attention to Terra. She wasted no time trying to open her cage, glad she had hair pins in her hair (she had to keep her bangs under her hat somehow) at the time and that she'd taken a few lessons on lock picking from a former friend.
The cage was a simple bar cage with a locked door that the Minicons could open and the top was open for Megatron to dump or pick up a human captive. This would be the only time she'd get to escape since the entire crew was busy getting ready to fire the Hydra Cannon again. It took her at most ten seconds to open the ridiculously simple lock and look how far up she was. The platform she was on was knee height to Megatron, high up enough to hurt herself if she didn't do this right. So, she lowered herself down the edge and then dropped, landing as quietly as she could while still landing on her left leg wrong.
"Megatron, Optimus Prime just warped into our line of fire!" said Cyclonus, further occupying the crew while Terra hobbled to the nearest vent unseen.
None of the Decepticons noticed her, but a Minicon did. It was Starscream's Minicon, she didn't remember it's name, and it was actually helping her get to the vent without saying anything to her.
"Thank you," she whispered to her temporary friend, leaning on the bot until they got the vent. The grate opened to reveal Light Racer waiting for her. No words were exchanged as she was handed over to her partner and the other Minicon closed the grate behind them. She and her partner hobbled down the vent for a minute before Light Racer finally transformed and they sped away into the Decepticon ship. "I hate not being able to do anything, but there's too many bots around the Hydra Cannon controls to do anything."
Light Racer beeped a question in response to her comment.
"We can still throw a huge monkey wrench in their plans by messing with their engines." The bot beeped their approval and excitement at the thought of breaking things.
Hot Shot watched Optimus and Jetfire fight Megatron outside the Decepticon ship, wishing he could help in some way. Most of all though, he wanted to take back to hurtful words he said to his commander.
Optimus Prime fought with everything he had against Megatron. He couldn't let the planet be destroyed; Earth had become a second home to the Autobot team and their human friends had welcomed them with open arms and unwavering support. Earth was also Terra's home.
"This planet is Terra's home, Megatron," he pointed out to his enemy, hoping the Decepticon leader would have an epiphany. "Destroy Earth, and whatever bond you have with her will be gone!"
"Then I'll just make her forget this pathetic rock!"
Terra and Light Racer raced to the Warp Gate through the vents after pulling any and all wires they could get their hands on in the engine room. They only stopped when an alarm went off, and they were quick to run before any bot could spot them.
Megatron had enough of dealing with Optimus Prime, so when Thrust informed him that the Hydra Canon was ready again he didn't hesitate.
"Fire the canon at Prime!"