Shadow of the Rainbow is a debut novel that takes place in Barcelona's centre, a neighbourhood called el Raval. Raval is a controversial part of the city, as it has become popular recently, also famous for its immigrant residents. A girl called Serap, who has just moved to the barrio, gets herself locked out on the first night and has to meet the neighbours. Serap wants to write a novel but doesn't know what to write. She falls into the tunnel of writing as she gets more involved with the streets of el Raval and its residents.