The series "Gran Hotel" is a Spanish dramatic detective story set in 1905. A young man named Julio is searching for his sister who disappeared several years ago. Clues lead him to the doorstep of the idyllic Gran Hotel. In order to get closer to all the employees and permanent residents, he gets a job as a waiter at the hotel. But his search attracts the attention of the hotel owner, Alicia Alarcón. She decides to help Julio, and a dangerous romance gradually develops between them.