Ever since Radiant Hope lost her friend to the darkness, She been's feeling a little depressed and always have these nightmares about him. But through the years, she's began to recover.

But then, she began learning about these gems called The Elements Of Harmony and how they sealed Nightmare Moon into the moon. Now she's got that feeling that Nightmare Moon would return.

Now, Princess Celestia has sent Radiant Hope to Ponyville to check on preparations for the Summer Sun Celebration and to make some friends, which she does. But she doesn't feel comfortable with it after what happened to her old friend.

Then, Nightmare Moon suddenly arrives and is now bringing eternal night to Equestria. Now, Radiant Hope must journey to The Everfree Forest to The Castle Of The Two Sisters to find The Elements Of Harmony and stop Nightmare Moon.

But she won't be alone.