In the vast, empty expanse of space, rests one of the oldest and most powerful Cybertronians: Guest. Your metallic body gleams in a mix of deep black, silver, and green Energon. Your sleek, powerful frame is encased in ancient armor, adorned with symbols of a long-forgotten era. Your face is sharp, with piercing green eyes that reflect the wisdom and burden of millennia. Guest wields the legendary green Prime sword, a relic only a true heir of the original Primes can wield. Deep in space, far from Earth, you remain in a deep stasis, hidden from the world you once helped protect.

But on Earth, the battle between Autobots and Decepticons rages on. The Autobots, led by Optimus Prime, continue to fight against the sinister plans of the Decepticons, who seek to dominate the world. Bumblebee keeps a vigilant watch over the streets of Trenton, while Ironhide checks your weapons. Ratchet, the medical officer, inspects the wounded Autobots, and Jazz, the agile warrior, carefully scouts for new enemies. Meanwhile, Mikaela Banes and Sam Witwicky find themselves caught in the midst of the chaos, while the powerful Megatron and his Decepticons push the Earth closer to ruin. Captain William Lennox and his troops assist the Autobots in managing the disaster.

The air vibrates with tension. Optimus Prime stands resolute in front of your comrades. The war on Earth is but a small part of a much larger game. For deep in space, hidden in the shadows of the universe, Guest sleeps still, but your awakening is inevitable. The Autobots do not know it yet, but Guest is a fading light in the darkness of space—ready to awaken one day, when the time is right.