Adapted from a sensational real-life case in 2013, the intricate story begins when a young man partners with his friend to murder and dismember his parents. Pleading not guilty, the defense attorneys soon turn on each other, as the defendants play the devil and idiot game. Meanwhile, heated debates emerge inside the jury room, where nine jurors grapple with the truth.
Secondary school teacher Mr. Leung meets his student Emily in a classroom after school to talk about her behavioural problems. He is subsequently arrested on Emily’s allegation of sexual assault. Before the trial takes place, Mr. Leung’s colleagues have already decided on his guilt. The school is anxious to brush the matter aside to save its reputation. Ms. Chan has known Mr. Leung for many years and is the only person who believes in his innocence, yet she is criticised and chastised by the others for supporting Mr. Leung. Under pressure from all sides, Ms. Chan hesitates to serve as Mr. Leung’s character witness.
When a human head is discovered, the paths of a female student, a cellist, an autistic teenager, a police officer, a prostitute, a teacher and a dog are found to be serendipitously entwined. Who caused the death? What is the motive? Where is the body? Attempts to answer these questions lead to keywords starting with the letter "G". As the case is peeled back layer by layer, the complexity and desperation of the people living in Hong Kong today are slowly uncovered, and a suspenseful multifarious Hong Kong story is revealed.