Adelaide is a 40-year-old literature teacher married with children. One day, she learns about the murder of a wealthy and arrogant co-worker of hers, strangled in her own home. Adelaide meets Gaetano, the charming inspector dealing with the case and decides to help him in the investigation, much to her husband's chagrin.
Special Forces Captain Aldo Paccione must pull together his former world team Delta Force and go deep within the mines of Sardinia when it is discovered that a vengeful band of mercenaries are developing deadly biochemical weapons.