This story is a sequel to Friendship is More Than Meets the Eye

A G1 Transformers/G4 Pony crossover.

Twilight Sparkle had thought she'd seen the last of Grimlock- and of the Transformers in general. She was wrong. Now, what starts as a simple diplomatic mission soon spirals out of control as an ancient war threatens to come to Equestria!

While on a camping trip, Twilight Sparkle and her friends decide to investigate a mysterious meteorite- and find an unexpected visitor came along with it! (G1 Transformers/FiM crossover!)

Cover image (and inspiration) by Bingodingo! http://bingodingo.deviantart.com