Philippe Lutcher, an anarchist, fires a shot at Clara Stuart, a famous stage and screen actress, but only wounds her. The star, through affectation and curiosity to know his motives, pleads in his favour at his trial, but he rebuffs her pity. After he has served 18 months in prison, they meet and fall in love.
Denise Moret joins her husband, Pierre, in Mongolia where he works as a civil engineer. One night she loose a lot of money on the roulette and therefore is forced to borrow money from Prince Lee-Lang. The Prince immediately begins to flirt and make advances towards Denise. Advances she rejects.
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.
