When a cop is shot dead during a raid, and another is mistakenly shot for killing him, his fellow officer friend goes undercover on his own to bust up the criminal's operation.When a cop is shot dead during a raid, and another is mistakenly shot for killing him, his fellow officer friend goes undercover on his own to bust up the criminal's operation.When a cop is shot dead during a raid, and another is mistakenly shot for killing him, his fellow officer friend goes undercover on his own to bust up the criminal's operation.