The untold story of Cheng I Sao, the greatest pirate of all times. In a lawless world, overrun by roving ships and ruthless men, a girl propels herself from a life of forced prostitution, to command the largest and most successful pirate fleet in world history. A grandma narrates an extraordinary bedtime story to her granddaughter. It turns out, there is more to this tale than helping put her child to sleep.