As a well-respected aristocratic family of Noxus, Katrina Du Kakau found her status as high when she was young. Her father is a demanding mentor who teaches many students.

As a result, Katrina's childhood had almost no rest. In addition to sleeping, her time is all used to test her physical strength, dexterity, and tolerance to pain, in order to hone herself into an ultimate weapon. She climbed the tallest tower in the dark night, and no one ever found it.

She is eager to contribute to Noxus, she is eager to show her potential and an opportunity to play for the empire and royal power.

Her first goal came from her father's direct command. Her mission was to assassinate an enemy squad leader, a desperate name named Demetrius.

Katrina is therefore angrily. Her lifelong training and talent should not be wasted. So she did not take into account the assigned goals, but sneaked into the enemy camp and did a perfect execution. Noxus will usher in a speedy and glorious victory. Her father will also be proud.

At dawn, the hero Dmitryus led the troops to seek revenge, violently rushed into her father's camp. Dozens of Noxus soldiers were slaughtered, including the general's personal followers. Katrina's father managed to escape.

The anger of Du Kekao's departure made him speechless and even refused to look at her daughter. She became his shame and a shame for the family. He reminded her that the greatest assassins would not want to admit and glory.

The shameful Catalina rushed into the wild and was alone. She is going to complete the initial task. Demetrius will pay the price of life. Even so, she is still unsettled. Can she forgive herself? Why is she so stupid?

She knew that she had lost her father's weight and could never recover it. Her father promoted others to replace her position just to humiliate her. Even so, she vowed to prove herself at any cost and re-offer her talents to the empire, becoming the person she has always wanted.