Sister Marina, a very unorthodox nun, is sent during the summer of 1994 to El Parral, a boarding school for boys threatened to be closed soon. Even though the kids welcome Marina with all kinds of pranks, they will, little by little, become something very close to the family they never had.

Carlos, a ruthless Spanish negotiation expert working in Brussels, is tasked with handling the kidnapping of a senior oil company executive in a troubled West African country —with which he has old and deep ties—, torn by ethnic tensions and government abuses.