Mike is a motorcycle messenger, and Antonia is an elegant member of the aristocracy. A chance meeting between the two soon leads to a stormy and passionate love affair; but there is a darker side to Antonia. Meanwhile, an aggressive narcotics investigation targets Tony Vernon-Smith, the upper-class dealer who provides Antonia with drugs, which has developed into an escalating addiction. Leading the investigation is her father, the Narcotics Squad investigator. Taking refuge at her estate, Mike struggles to help Antonia overcome her addiction, but forces are conspiring against them..

(Released in the US as SHAMELESS)