When a terrified girl calls 911 from a forest, the ALPHA 00 team is called in for a large-scale search, which quickly escalates into a murder investigation and the reopening of a fifteen-year-old missing persons mystery.

A heavily armed intruder takes twelve young military applicants hostage in a remote fort, forcing ALPHA 00 into a nerve-wracking negotiation operation in which the hostage-taker does not shy away from brutal violence.