When the angel Qi Qi came to the world to look for the 6 Angel Tears and the Messenger of Hell that were lost in the world, Qi Qi never thought that she would fall in love with a mortal Qiao Yufei. In order to save Qiao Yufei who was in a car accident, Qi Qi Qi gave her angel tears to Qiao Yufei, and she only had 100 days left to live. After Qiao Yufei woke up, he forgot about his relationship with Qi Qi, but unexpectedly fell in love with An An, the nurse who had been taking care of him.