Logging into the video game is how he escapes from the “signal” to survive, but it is how she walks into a deadly trap.
When he was in school, Chen Hsin-han was a straight-A student and regarded by everyone as a winner in life. However, at the age of twenty, he had a car accident and since then, he has gained a supernatural power that allows him to see the signal of death – black fog emitting from those who are about to die.
One evening, Hsin-han sees his boss shrouded in black fog but misses the chance to save him. Hsin-han blames himself to such an extent that he becomes frightened of going out and confines himself to his home, relying on his parents. Such a dramatic change in him attracts criticism from others and his family finds it difficult to accept. Hsin-han escapes from reality by playing an online video game and falls for a girl called “Hsi-li” who he meets in it. She is a thoughtful person and a good listener.
One day, Hsi-li tells Hsin-han that she is leaving the game and would like to meet him in real life before she logs out. Hsin-han forces himself to go out and just before they say goodbye, he sees black fog emitting from her. Hsin-han is used to avoiding not only the signal by confining himself to his home but the pain after seeing it. But this time, the signal comes from a girl he likes and that puts him in a dilemma. Having struggled with himself, Hsin-han musters the courage to go out again, deciding not to repeat the mistake he made with his boss.
Since their meeting, Hsi-li has gone missing. Her family and friends come to Hsin-han for help and together, they go searching for her. Their investigation leads them to the conclusion that Hsi-li is likely to have been lured into “The School”, an internet organization known for manipulating the users; as a group of expert pick-up artists, they even coerce teenagers into making self-harm videos, and that is what may put Hsi-li’s life in danger. While trying to rescue Hsi-li, Hsin-han meets Wu Shu-yen, a journalist who aims to expose “The School.” Later Hsin-han finds out that Shu-yen has not only a strong sense of justice but also a supernatural power that allows her to will people to do what she asks them to do.
Eventually, they manage to find Hsi-li and save her. Nonetheless, the mastermind behind “The School” is still out there and this evil organization remains active. Hsin-han decides to move out of his parent’s home and join Shu-yen. He wants to make the best of his talents to help more victims escape from “The School”.