The devastating consequences of the slave trade in 18th century Bristol are explored through the powerful but impossible attraction of well-born Frances and her Yoruban slave, Mehuru. Bristol in 1787 is booming, from its stinking docks to its elegant new houses. Josiah Cole (Warren Clarke), a small dockside trader, is prepared to gamble everything to join the big players of the city. But he needs ready cash and a well-connected wife. An arranged marriage to Frances Scott (Emma Fielding) is a mutually convenient solution. Trading her social contacts for Josiah's protection, Frances enters the world of the Bristol merchants and finds her life and fortune dependent on the respectable trade of sugar, rum and slaves. Among the slaves is the educated and charismatic Mehuru (Ariyon Bakare). Lonely in her new life married to a boorish and uneducated husband with whom she has little in common, Frances finds herself increasingly drawn to Mehuru and him to her. But tensions are mounting and ...