When two friends get chased into an odd old temple with strange drawings on the walls, they find a colorful rainbow portal and get sucked into it. Having been found by a mythological creature, they go and help her in her endeavor to save her friend,.
Twilight Sparkle is The newest Princess of Equestria, when she was young her best friend was a Unicorn named Thunder Quill. They were inseparable, but when he had to move away, she swore off friends forever. Now he's back, but he holds a secret.