A young pool hustler is coerced into a contract with a crooked promoter when his brother amasses large gambling debts. The Chief steps in, but can he get through to the brothers in time?

The power station for a four mile square area of town is destroyed in an explosion, and when a similar attack takes out the auxiliary generator at Police Headquarters, Ironside realises that somebody somewhere is trying to cover their tracks. The question is, who - and what is their goal?