Rainbow Dash plays the role of Thor based on Ragnorok. She ends up on the planet Sekaar, ruled by the Grandmaster.

She must defeat his champion, then she can go back home. Get ready to laugh your hearts out when she faces someone that she made very angry. Luckily she can write to Princess Twilight Sparkle to come and help her. Along with Spike from Equestria, and Spike the dog. Even Lyra will help her.