Clarence has grown up listening to stories about the African country which his father Jacobo and his uncle Kilian emigrated to in the decade of 1950 to work in a cocoa plantation. In that eternally green, lush and voluptuous land, the young brothers discover the frivolity of the colony's social life in comparison with a corseted and grey Spain; they share the hard work needed to obtain the Sampaka finca's perfect cocoa; they learn of the cultural differences and similarities between the colonials and natives; and they get to know the meaning of friendship, passion, love and hate. But one of them will cross a forbidden and invisible line and will fall hopelessly in love with a woman. His love for her, marked by complex historical circumstances, will transform the brothers' relationship and the course of their lives, and will be the source of a secret whose traces still remain today.