One day in the everfree forest Twilight Sparkle, Rainbow Dash, and Apple Jack were having a camping trip and they just settled for the night

"Can't sleep," says Twilight as she tried sleeping, "Hey Sugar cube get some sleep, big day tomorrow" explains AJ as she tried going to sleep. "Uh..Apple Jack, may I ask you something?" asks Twilight, AJ responded "Sure Honey bunch of course what is it", "Oh thank you, I just wanted to ask if we will ever get back to ponyville, Rainbow and you are looking forward to go back" says Twilight "Of course Twi, you promised your boyfriend right? now go to sleep big day" said AJ as she fell asleep, "okay thanks".

As Twilight fell asleep a disturbance called for the young unicorn, it could be hope or an enemy. "Ms.Twilight, something lays and waits for you", as Twilight got up she said, "Huh? who are you" as she looked around and saw a pony with a black coat on, as he responded back," I am all that ever was or maybe I was all that is left, something lies ahead for you" has the mysterious pony vanishes in the air leaving Twilight looking at Rainbow and AJ, "Can you pass me the cake, with extra sugar?" moans Rainbow as she sleeps. As Twilight was waking up her friends RD screams, "Hey Twilight what is your prob I was sleeping" Twilight responses by saying, "Come on lets go, I found a castle we can stay at come on", AJ says, "Oh fine, come on y'all lets go" as they started walking to a castle named Castle Oblivion.

The three of the mane 6 arrived at the castle but feeling more tired than usual. "Hey AJ lets go barge inside" demands RD as she tries to budge the door, "No Dash we have to knock first" as AJ interrupts Rainbow from doing anything else. As they knocked the door opened and they all walked inside Twilight felt something she never felt before, "Huh" "What is it Twi" asks AJ, "I don't know I think I dropped some thing" says Twilight as she stopped walking. "The thing you dropped was your memories" says the same pony in the coat, "Wait what?" screams Twilight, "The moment you stepped hoof in this castle you lost your memory, here have this a card made from your memory, enter the door you see in front of you to move forward, and you will be closer to ones you miss" says the pony in the coat, "The ones I love, you mean Sky!?" Screams Twilight as she grabs the card by using magic. "One is to find is to lose and to lose to find, remember that if you can he he" as he vanishes again.

Twilight and her friends AJ and Rainbow Dash entered through the door by using the power of the card and they appear in Canterlot. "To Find is To Lose as Lose is to Find, your memory vanishes one you step in the Castle that turns memories to Oblivion" says the pony in the black coat.