void main()
{
    location lImpSummon = GetLocation(GetWaypointByTag("NK_FP_WP_IMPSUMMON"));
    location lImpWP = GetLocation(GetWaypointByTag("NK_FP_WP_IMPWALK"));
    object oImp = GetNearestObjectByTag("NK_FP_IMPGUARD", OBJECT_SELF, 1);

    PlaySound("as_cv_gongring3");
    if (oImp == OBJECT_INVALID)
    {
        CreateObject(OBJECT_TYPE_CREATURE, "nk_fp_impguard", lImpSummon, TRUE);
        oImp = GetNearestObjectByTag("NK_FP_IMPGUARD", OBJECT_SELF, 1);
        AssignCommand(oImp, ActionMoveToLocation(lImpWP, TRUE));
        DelayCommand(1.5, (AssignCommand(oImp, ActionSpeakString("Who go there?", TALKVOLUME_TALK))));
    }
}