Hooker's children come to visit their father, but the vacation is interrupted after Corrigan and another Officer unwittingly disrupt an armed race-track heist, which leaves Corrigan's fellow Officer dead. The robbers were under the pretence of being ambulance attendants, and Hooker has reason to believe that the robbery was an inside job; but the case means that his time with his cherished kids is limited...

Hooker, qui s'apprête à partir en vacances avec sa famille, est appelé pour résoudre une affaire : un policier a été tué au cours d'un hold-up, 500 000 dollars ont été dérobés dans le milieu des courses hippiques...