Complex sentence: Knowing they'll be stranded for sometime, the Reds and Blues begin building their bases and wait to be rescued.The trailer suggests that Epsilon-Church and Carolina may be off on their own adventure since they aren't with the Reds and Blues.
Split into simpler sentences: Knowing they'll be stranded for sometime, the Reds and Blues begin building their bases and wait to be rescued. Trailer suggests that Epsilon Church and Carolina may be off on their own adventure since they aren't with the Reds and Blues.