Cobra Commander vs. Hearts of Steel! Thousands of years ago, a starship crashed on Earth—and the Hearts of Steel Transformers were born... but how can these steampunk Cybertronians be real?! And what does Cobra Commander want with them, when he hasn't even got Cobra to back him up? The Revolutionaries have uncovered one of the darkest and most incredible secrets on Earth!
- The secret history of Cybertonians on Earth—but how can it be!
- Who is behind the Cobra Commander mask?!
- Springing from the fan-favorite Transformers: Hearts of Steel limited series!
- Variant cover by John Royle!