Here's the plot: Calling to the lost and unusually talented, this mysterious, paranormal circus arrives and disappears from towns and cities across the world without trace or warning, welcoming these outsiders with open arms and let the circus become their new home. It would be supernatural, eerie, probably with elements of mystical realism. Once you've joined the circus, things will begin to get more interesting when the Night Circus comes in contact in a strange device given by a perilous, apprehensive, archaic gentleman whose name was not told to anyone. Traveling from era to era would be a common element to the Night Circus and its staffs.
Note: The characters would be reserved only to those who join the circus, perhaps later the option to create civilian/law enforcement type characters might rise as well. Although the roleplay is a focused cast of those personally involved in the circus with a time machine brought into the play unless the idea can possibly grow.
I'm sorry if I'm making the rp too complicated for you guys.