Complex sentence: When his memories are being repaired, Bumblebee gets a clue that will lead both him and Windblade to complete their mission and save their friends, unaware that a team of Decepticons are tracking them.
Split into simpler sentences: When his memories are being repaired, Bumblebee gets a clue that will lead both him and Windblade to complete their mission and save their friends. Unaware, that a team of Decepticons are tracking them.