The autobots went to destroy a Darkmount for good, while Ratchet and Smokescreen stayed with Optimus and the kids.
"Ratchet, ever since Smokescreen save me, I been get extremely tired, spark slowly-fading, weaker and as the days slowly past, so weak, my time be at stake."
Ratchet scan Optimus' body.
"I fear the wounds are fatal."Ratchet said.
"I searched every-micron of our base,but the bandages and energon-pump is the onky thing I found."
"The Forge..of Solus..Prime..what,what...happened to...it?"
"It's gone too."
He hold his leader's hand.
"The 'cons pick the base clean."