Love, love, love this book! One of my favorite artists, from Till All Are One, takes the reigns on this little tale. It's about what others do while Prime is on Cybertron, trying to make peace with the humans. When there's an explosion and no one can hear anything from Cybertron - including Soundwave - then Aileron has to lead those left on Earth to find Jazz, even as they wonder why they wouldn't try to get the Cybertronian weapons away from humans as a first priority.
It's deep, it's amazing character development, and I'm just absolutely loving this series.