She is the top killer of the 21st century. Because she obtained the precious glass heart, she was double betrayed by her best friend and boyfriend, and finally threw herself into a cliff. When she woke up, she found that her soul had traveled through time into the body of a good-for-nothing young lady, but because of her glass heart, she discovered that the good-for-nothing was actually a genius. Because of Liulixin, she firmly believed that in this life, she would be able to find the truth about reincarnation for hundreds of lives. In the process of searching for the secret, she never imagined that she would encounter that monster and she would never be able to escape again...