Koma

During a wedding party held in a hotel, Ching becomes drunk and later wakes to horror: one of her kidneys has been surgically removed. Ling appears as the only unfamiliar face among the guests, instantly drawing Ching's suspicion. This shocking discovery sets up the central mystery of who took the kidney and why.

Ching identifies Ling as the prime suspect in the initial investigation because Ling was the only unfamiliar face at the party. Ling remains unknown to hotel staff, deepening the sense of mystery. Police begin probing Ling’s connection to Wai and Ching, but evidence is not yet conclusive.

Ling is released due to insufficient evidence, and she immediately begins stalking Ching. Ching treats the harassment as a nuisance at first, but soon she and Ling enter a dangerous cat-and-mouse dynamic. The contrast between Ling’s hardships and Ching’s wealth highlights the darker motives at play.

The two women engage in a tense game, each testing the other’s limits and revealing the darker sides of their lives. Ching grows more anxious and more determined, while Ling hints at harming Ching’s safety. The threats to Ching’s kidney become a central element of the suspense.

One night, Ching is kidnapped by a mysterious man who seems to be Ling's ally. Ching reveals that her kidney is weak and may not fetch a high price on the market, signaling desperation. She awakens to find Ling injured beside her, suggesting a twist in loyalties.

Ching takes Ling to the hospital, and through this moment she discovers Ling is not merely a villain but a person capable of genuine kindness. Ling reveals she has a childhood sweetheart whose identity she does not disclose. This encounter complicates Ching’s view of Ling and the broader situation.

Ching and Ling attempt to strike a deal with the mysterious man to obtain a kidney for Ching. Ching alerts the police beforehand, and when they arrive the man holds Ling hostage. Ling allegedly kills the man in the confrontation, heightening Wai’s suspicions.

Wai, Ching's boyfriend, grows suspicious of Ling and breaks into Ling's house to uncover the truth. The intrusion confirms Ling’s dangerous involvement and raises the stakes toward a final confrontation. Ling’s hidden past and motives become clearer as the investigation tightens.

Ling explains that her childhood sweetheart planned to sell kidneys to help Ling's mother, and that Ching’s betrayal drove him to kill himself. This revelation reframes Ling's actions and reveals the desperation behind the scheme. Ching learns the raw stakes behind Ling's conduct.

Ling discovers Wai has been searching her house and holds Wai hostage, demanding that Ching come to her workplace, a research center, to donate her kidney. The confrontation is set up as a countdown toward a dramatic exchange. The tension mounts as Ling's plan comes to fruition.

Ching, armed with an axe, chases Ling to the research center. She learns Wai is dead, intensifying her fury and resolve. Ling suffocates Ching with plastic, bringing the violent climax to its peak.

Ching wakes in the hospital and learns she was saved by a kidney from the dead donor at the scene. Ling hacked herself to death to provide the kidney Ching desired, a revelation that shatters Ching’s sense of fate. In the final shots, Ching, sedated, stares as Ling’s presence lingers and a voiceover declares 'You'll owe me this forever.'