Stuck In Fairy Tail (Book 1)

Three girls were walking around the town they when to a store and opened the door to a surprisingly empty store when it look full on the outside and what they saw in the background a door it had a F.T.C so the three girl walk in and they saw a big white flash of light from the door and saw a environment that they didn't recognize

How will they get back home or will they ever get back home

A/n:
I don't own fairy tail or the characters

expect: Alex,Aphmau and Jewel