Five Knights At Mark's

Everyone makes mistakes; some decide to take the wrong cab, some take late night walks, and some murder people.
Who would've thought that these three would connect after all? Emerald sure as hell didn't.
But there are people, who's mistakes are because they ignored the warning signs... Those are the worst mistakes, those are mistakes like King's Realm.
King's Realm is you family-friendly restaurant, with cheerful robots that sometimes would sing but mostly would be telling jokes. By day, by night in the other hand... King's Realm takes a turn into opposite land. Emerald could always step out of the door and never come back, but there's a certain green head that calls her curiosity, soon followed by selflessness.
She is set, on saving them, but there's no way to save something that never needed saving.