After a smash and grab mission goes haywire, the Master Chief finds himself in Equestria. As he meets the ponies we all know and love, his past with Cortana haunts him as he struggles with his new life.

But a threat who wants revenge makes their move . Will John 117 move on from the past to face the enemy, or will he not care and doom the ponies to their fate?

In the pony timeline, this takes place after Tirek is defeated. In the Halo timeline, it takes place after Halo 4 and before the events of Halo 5.

Edit 1: Changed the rating from mature to teen. Tell me if I should keep it the same.