Blanca Ferrando is a young woman who became blind at the age of twelve, due to a dramatic fire in which her older sister Beatrice died and which was caused by her violent boyfriend, Sebastian. This tragedy made her develop a very strong sense of justice to the point of pushing her to join the police. Blanca is helped by her most trusted friends: her guide dog Linneo, a female bulldog who protects and comforts her in the most difficult moments, and her beautician friend, Stella. After overcoming her work challenges, she finds herself facing sentimental ones: torn between two men, Inspector Michele Liguori, a man of many secrets, and Nanni, a young cook.

Eva, a mysterious doctor, searches for an answer to her urgent dilemma as she unravels Dr. Anmuth's Book of Vision. Henry gets involved in her life and is forced to confront his own nature, as Eva faces the biggest decision of her life.