Description from DeviantArt:

In Equestria Girls Reboot:
The girls can transform into a "Equestrian", Thanks to the "Harmony Gems" that can gain them not only new look but magic abilities too, each gem gives to the owner different ability than the others,
The girls or "Rainbooms Group" in public can turn into equestrian form and together they become "Equestria Girls" or also they called in Canterlot city "The Mane 7" the new magicals girls heroes to defend the evils,
The most important part is: they have to keep their secret identity from public and people of Canterlot and no one suppose to know who they are except for few people like the mayors sisters Celestia & Luna and others... In order to stabilize their lives and safe the others.
I almost close to finish new things, see yo soon...