The group has never been in more danger than now.  The princess has entered her hyperactivity period and no 

person, city, or country is safe if she reaches her danger zone. 
Once she enters the capital, 
we can't act easily.
Una vez ella entre a la capital, 
no podremos actuar con facilidad.
Una vez que ella llegue a la capital
no tendremos tanta libertad de actuación.
Assim que ela entrar na capital,
não poderemos agir facilmente.