In the near future, memories can be read and edited. "Memory Catcher" Ling Zhou is a leader in the industry. He can sneak into the complex mental maze of his clients to capture and remove those traumatic memories that have turned into "black butterflies". He is calm, precise and never misses. Until he met the mysterious client Shen Ruo. She asked to remove a seemingly simple memory of a car accident, but deep in the maze of her memory, there was a larger and more dangerous "black butterfly" hidden that should not exist. During the pursuit, Ling Zhou found that his memory was actually entangled with Shen Ruo's, and the boundary between reality and illusion began to collapse. He not only wants to capture the butterfly, but also find himself lost in the maze that devours his mind.
