Johnny Hart (Rod Cameron) is on the run from the law after killing one of the men who shot his partner. He passes through a town and stops at a saloon owned by singer Lorena Dumont (Yvonne de Carlo). The two seem a good, albeit tempestuous match, although Johnny has no plans to marry -- Lorena has other ideas and a shotgun wedding ensues.

A rich woman and a calculating insurance agent plot to kill her unsuspecting husband after he signs a double indemnity policy. Against a backdrop of distinctly Californian settings, the partners in crime plan the perfect murder to collect the insurance, which pays double if the death is accidental.

When the future empress Wu Zetian's two courtiers die in a mysterious fire, she gets Di Renjie, a former detective and rebel, released from prison to solve the mystery of the fire.