Character Relationship Map: Accident

Characters

• Ho Kwok Fai / Brain (played by Louis Koo) — protagonist

  Ho Kwok Fai / Brain leads a team that engineers elaborate murders to look like accidents. After Fatty dies and Uncle is injured, Brain becomes convinced that Fong Chau arranged the disasters, stalks h...

• Woman (played by Michelle Ye Xuan) — supporting

  Woman is associated with Brain's killing team and collects payment for the murder at a parking garage. Brain discovers that she knows about the client because Fatty told her, but he interprets this as...

• Uncle (played by Stanley Fung Shui-Fan) — supporting

  Uncle is a member of Brain's murder team who accidentally leaves a cigarette butt at a crime scene. He promises to stop smoking, but symptoms of Alzheimer's disease cause him to forget the vow and lat...

• Fatty (played by Lam Suet) — supporting

  Fatty is a member of Brain's team who dies when a bus loses control and runs over him after a successful murder. Before dying, he asks Brain whether the event was really an accident. Brain takes his b...

• Brain's Wife (played by Monica Mok Siu-Kei) — supporting

  Brain's Wife is referenced only in the final moments of the story, when Brain looks at the sky and thinks about her as he is dying. The plot provides no further information about her actions or circum...

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Brain's Wife → Ho Kwok Fai / Brain (wife)

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Woman → Fatty (Social Source Of Information) — Fatty provides the Woman with information about the contract.

  The Woman explains to the Brain that Fatty had told her about the client and the payment.

• Ho Kwok Fai / Brain → Woman (Alliance Teammate) — The Woman is connected to the team's contract operation.

  The Woman collects payment connected to the team's job, and the Brain knows that only Fatty and he should have known about the payment pickup.

• Uncle → Fatty (Alliance Teammate) — They belong to the same professional killing team.

  Both Uncle and Fatty are described as members of the same group of killers specializing in disguised accidents.

• Ho Kwok Fai / Brain → Fatty (Alliance Teammate) — Fatty is the Brain's operational partner in the team.

  Fatty is identified as another member of the team, and he participates in the staged killing operation with the Brain.

• Ho Kwok Fai / Brain → Uncle (Alliance Teammate) — They work together as members of the accident-murder team.

  Uncle is explicitly described as a member of the killing team led by the Brain. The two repeatedly coordinate murder plans and later communicate about...

Story Analysis

A professional killer's paranoia turns ordinary accidents into a chain of mistaken revenge and irreversible tragedy.

Plot Progression

1. Accidents by Design — The Brain leads a team that disguises murders as accidents. A cigarette butt left by Uncle exposes a weakness in their otherwise careful method.
2. Rain and Forgetfulness — The team accepts an electrocution contract that depends on precise rainfall. Repeated failures and Uncle's memory problems increase the danger, but the target is eventually killed.
3. Paranoia Takes Control — Fatty dies in a bus accident, and the Brain interprets the surrounding events as a deliberate setup. He begins investigating the insurance agent and watching him from a rented flat.
4. Betrayal in the Shadows — The Brain discovers the Woman collecting the payment and kills her after suspecting betrayal. The client's death and Uncle's injury intensify his mistaken campaign for revenge.
5. The Cost of Mistaken Revenge — The Brain's sunlight trap is disrupted by an eclipse, and Uncle reveals that Fatty's death was accidental. The Brain fails to stop the resulting fatal collision and is later killed by the insurance ag...