Not What She Seems-Natasha Romanoff

Natasha is a dancer. A ballet dancer. She lives an ordinary life for a ballerina. So it seems.
So, on the day that a group of three boys and their friends come and reluctantly watch her performance, she wasn't expecting it.
She wasn't expecting that they, would change her life forever.
And why is 'Bucky' familiar. How far will she go to keep her secrets hidden?
Will they find out? Will they find out that she is an assassin?