A Bioshock crossover starring the mane six.
Years after the events of FiM, the six former Elements of Harmony have moved on with their own lives and rarely see each other anymore. Pinkie invites the group to Manehattan for a reunion, but things spiral wildly out of control, and they end up in the decaying, underwater city of Rapture. The old friends square off against everything it's leader, Summer Rain can throw at them, including crazed splicers, the fearsome Big Stags and the Little Fillies they protect.
Will they be able to pull together to save the sunken wonder, and their strained friendship?