Following Dietrich's arrest at the anti-nuclear rally, Barney tasks Harris to book him while the others go downstairs to assist the officers in dispersing the riot. His arrest also results in a visit from Internal Affairs. Another protester, who happens to be a nuclear engineer, is booked for splashing his fellow protesters with atomic water.

A psychologist is brought in to help Wojo remember through hypnosis the name of a criminal so he can close a case. An inventor is arrested after he is accused of stealing the plans for a battery he invented for an electronics company.