Between the events of Cybertron and the Transformers: Energon animated series, Wing Saber developed a problem with authority, and departed from his duty with the Autobots after a dispute with Optimus Prime over the life of a human astronaut. Rejoining the Autobots on Earth in the midst of a battle with a super-powered Starscream, he renewed his ability to combine with Optimus Prime and become a valued member of his team. At the end he fought Starscream.  Wing Saber transforms into a jet resembling an A-10 Thunderbolt II. He is armed with a pair of saber swords (Flap Swords), and can activate the energy cannon mounted on his back with his Cyber Key Power (Galaxy Caliber). He combines with Optimus Prime into Sonic Wing Mode (Sonic Convoy, with the Force Chip special attack Sonic Double Impact).    (Source: Wikipedia)

A huge black hole is about to swallow the entire universe, including the Transformers' home planet Cybertron.. While Galaxy Convoy and the others search for a solution, the Transformers escape from the collapsing planet and infiltrate Earth as "robots in disguise"...Galaxy Convoy encounters Vector Prime and learns of the existence of "Planet Force", an ancient relic capable of resetting entire planets, believed to have been lost thousands of years ago with Cybertronian explorers who failed to build a space bridge to the edge of the universe.
 
Thus, Galaxy Convoy and the Cybertron warriors he leads embark on a grand adventure across the vast universe in order to find the Planet Force and awaken the ancient warrior Primus to save the universe. 
 
However, Master Megatron and his underlings plot to control the entire universe by acquiring this power, and they relentlessly obstruct Galaxy Convoy and his friends...Will Galaxy Convoy and his friends be able to safely obtain Planet Force? 
 
(Source: TV-Aichi, translated, edited)
 
Note: The international version considers this series a sequel to Micron Densetsu (Armada) and Superlink (Energon), featuring references to characters and events from the two, as well as an additional scene in episode 51 linking the three.
 
Note: The US release initially combined episodes 1 and 2 into one, before ultimately airing a dubbed version of episode 2 as episode 52.

Sonic Bomber