Misa Lee and her team at the Leomrobot company achieve a breakthrough in artificial intelligence. Within one year, the company successfully created a harmonious sentient humanoid. However, at the company's annual awards function, the humanoid's unveiling leads to bizarre surprises.

Christmas, a festival that brought families together for some, started tearing apart families for others. Since four years ago, several orphaned children mysteriously began disappearing around Christmas. Nobody has ever been able to solve this mystery. Until one day, a group of friends come toget...