While there is no linear "story," the Co-op mode places you in various tactical situations with specific narrative-driven objectives:
: The title refers to the exact moment an operation is scheduled to begin. Operational Scenarios (Co-op & Single Player)
: Neutralizing or arresting specific suspects within a fortified location.
: In multiplayer PvP, one team plays as the MS Unit-9 (Attackers) while the other portrays a terrorist cell (Defenders).
: Methodically clearing a building to locate and neutralize explosives before they detonate.
: AI enemies may hide under beds or in closets, or surrender based on their "fear level" and whether they are outnumbered. Zero Hour on Steam