A dangerous new drug has emerged into the nightclubs around Newbury. Entrium Trilenium, otherwise known as Entry, is easy to manufacture, looks deceptively like ecstasy, but is incredibly lethal. After the deaths of two young girls at a local nightclub, Superintendent Gregory Summers and his team believe that they're after a small time drug dealer on a probable manslaughter charge. However, their investigations take a devastating turn when tragedy strikes close to home.