Just as the title suggests, this drama is really "bloody". This drama is about a weak female lead (Wan Mei ) who gradually matures up and became stronger to fulfill her mission to became a chief so other assassins girls won't suffer as she did. Wan Mei gets used by others so much and ends up being in big trouble throughout the story. The drama also shows the struggles of each character and the reason behind their wrongdoings and every one of them has their own mission.

Although this show is not romance-driven, it is highly appreciated. There is a shadow (assassin's slave) name ChangAn who loves her unconditionally and sacrifice everything for her. The love has between Chang and Wei is so beautiful and pure, even there are some tough misunderstandings like when she was captured and went torture, it doesn't become an obstruction for their affection. They truly show that they love each other from the beginning to the very end and that no one can come between them. There is a romance between other characters but it's either unrequited or a terrible ending.

The ending was not satisfying for me but it was nice to see the character growth of Wan Mei at the end.