Zou Zou tries to help her childhood friend prove his innocence after he's accused of murder.
A respected gangster, Justin, finds himself in a deadly feud with his rival, the unscrupulous Esposito. The latter plans to steal a cargo of opium bound for China and to have Justin killed.
A compilation of segments covers the seven deadly sins of greed, wrath, envy, pride, lust, sloth, and gluttony.
