Hooker and Romano spot a van jumping a red light in a seemingly straight-forward traffic violation, but when they give pursuit they find themselves taking on gun-runners in the firearm-loaded vehicle. The pair go on the trail of the former members of a biker gang who are now involved in the illegal arms dealing, but just who is supplying them...?

The latest in a series of armed robberies on super-markets leaves a young cashier possibly paralysed when the thieves take her hostage and then push her from their speeding car to slow up the pursuing cops. The cars used by the robbers are specially modified "hill racers", leading to the local hill racing champion, an old friend of Hooker's, being wrongly arrested as the prime suspect. Hooker must prove his innocence by speeding after the real culprits...

A traffic hold-up leads by chance to Romano spotting a freshly stolen car, and when he goes to approach, one of the offenders opens fire, badly wounding him. As the juvenile roped into the robberies makes a run for it, one of the ring-leaders shoots him too - but to a watching TV camera, it looks as if it was Hooker who fired the shot! With Hooker facing an investigation over the shooting and Romano on the verge of loosing his nerve after being shot, the masterminds behind the car-theft operation are still at large...

Hooker, Romano, Stacy and Corrigan are staking out a small-time drug dealer when they find that a major drug supplier is involved – who is being staked out in a Federal investigation. Hooker is ordered to keep well away from anything to do with the Fed operation and any of the smaller dealers which may be involved with the drug ring, something which proves to be difficult and results in Hooker being suspended. But an old flame, who is a Fed agent, is undercover posing as the girlfriend of head of the ring, and Hooker, fearing for her safety, is determined to put the ring out of operation himself - even if it costs him his job...