One day on his way to work, Lucas Qin is caught in a subway attack by an aberrant lifeform and takes a fatal blow. When he regains consciousness, every part of his body feels wrong, and his reflection in the train window reveals a terrifying truth: he is still alive, but no longer himself. He has become an aberrant lifeform himself. Teetering between humanity and monstrosity, Lucas must learn to coexist with a parasitic spirit within him while surviving a society that fears what he has become.