On a island off the coast of Equestria, lives a entire group of ponies know as the Amazons, who are all mares trained in combat to defend themselves after a tribe of stallions have betrayed them. These Amazons live alone on the island as a gift from Princess Celestia.

One Amazin among them is Princess Diana, daughter of the queen, Hippolyta. Diana was always longing for adventure, but not outside of her home. That all changes when a stallion crash lands on the island, said stallion being a member of Celestia's Royal Guard who is on a mission and must return to Equestria.

To decide which pony is returning him home, Hippolyta holds a contest where her Amazons must prove they have what it takes to survive in Equestria. What she knows is that Diana has trained her entire life to win this moment.

Will Diana succeed and become the Amazon's representative or will she fail?