Reed and Malloy arrest Sparky a known drug user and thief when they suspect she is high. However, Sgt. Hardwicke tells Reed his case is too weak which turns out to be true. Mac tells Reed about a new program for officers to work alternate duty for 30 days to gain experience. Reed opts to join the vice squad with Hardwicke. It involves new training and a lifestyle that causes friction with his wife due to irregular hours and his environment. He quickly learns the job is dirty due to the type of crime. They bust a a man giving drugs to young boys in return for pictures of them. Malloy is paired with Officer Woods handling the usual calls including one where a woman has disarmed the criminal. Hardwicke follows up by having Reed use his connection with Sparky to have her provide details on two men who rob other dealers and fence goods. During the take down of the men Malloy is wounded.