 Based on an original play by Bruce Walker, the film tells of the exploits of 16-year-old delinquent youth Roy Walsh (James Kenney) and his gang in post-World War II London.The gang starts off by mugging women.Later, Roy becomes infatuated with Rene (Joan Collins), the sister of one of the gang members; but, already having a boyfriend, Brian, she rejects Roy, to his fury.