A young girl's brother is unfairly accused of murder .A junkie, he is resigned to his fate .She decides to unmask the real culprit.She goes to a mysterious mansion where she is welcomed by her sibling's would be friends .It's actually an opium den where people are treated to delights of smoking .They give her tea and cigarettes ,but their taste is oddly sweet.A dispenser of justice ,Za-La -Mort,comes to the damsel in distress ' rescue ,and with a little help from his sidekicks,checkmates the police.