Four policemen go undercover and infiltrate a gang of football hooligans hoping to root-out their leaders. For one of the four, the line between 'job' and 'yob' becomes more unclear as time passes . . . Four policemen go undercover and infiltrate a gang of football hooligans hoping to root-out their leaders. For one of the four, the line between 'job' and 'yob' becomes more unclear as time passes . . . Parental Guide