A mobile application called [Perfect Clear] claims to be able to remove all "junk" in life. At first, it just cleaned spam text messages. But soon, the "purification" began to get out of control: the annoying neighbor disappeared mysteriously, a painful memory evaporated out of thin air, and finally, a living person was completely erased from everyone's memory and physical world, as if he had never existed. As the only surviving witness, Lin Wan, a female college student in the Department of Psychology, became the next target after witnessing her friend being "purged". Is this unknown force eroding reality an out-of-control technological creation, or a terrifying existence beyond human cognition? When memory becomes the only weapon against forgetfulness, Lin Wan must uncover this desperate truth before she is completely "erased" from the world.
