Narcotics investigator Mai and her colleague investigators have staked out the hideout of a drug trafficking organization for several days, but they can't enter without evidence of the transaction. Frustrated, Mai arrests one of the traffickers in an unreasonable way. During the interrogation, Mai receives a phone call from the boss of the smuggling organization and is informed that a fellow investigator is being held hostage. Mai goes to rescue alone as instructed by the organization, but ends up in captivity. Mai is drugged while being restrained.
