a russian movie.
its about the 2 daughters of a mayor who are pretty much devils.
one day a nanny arive to look after the girls, not knowing the girls true nature, while the girls dont know the nanny is part of a group to kidnap and ransom the girls.
at a certain point the girls get captured and during a ransom video recording the girls are shown tied and gagged both with tape.
1 sisters mange to use a knife( yep, russian kids appartly carry weapons) to cut the tape away for her sister who free her sister in return.