Optimus
Rachet - "I've just received a message....from Starscream."
Bulkhead - "What does he want now?"
Rachet - "I something really valuable to you and won't as much use to Megatron. Meet me here in the forest."
Smokescreen - "He can't be talking about one of the Omega Keys can he?"
Arcee - "I don't know. Could be a trap."
Optimus - "Starscream's loyalty to Megatron has always been questionable but if he really is giving up one of the Omega Keys, we have to take it or Cybertron will continue to be graveyard forever. We will proceed with caution."
Timeskip
Starscream - (Speeding/Running) "It would seem I have the run of the place. Where are you? Ah, there you are." (Chuckle)
Optimus
Rachet - "Optimus, what's wrong?"
Optimus - "Something's not right."
Timeskip
Optimus - "No....No!!!!"
