Sofia's grandfather is the head security guard at a huge department store called "El Gran Almacen". So at night, while her grandfather guards the store, Sofia uses her imagination to turn the department store into a world of fantasy and dreams. Sofia decides to tell her friends about this new world and there her and her friends have many adventures. She also meets a new friend Juan, who she believes is a simple orphan child when in fact he is the son of Mauricio, the owner of the store. Mauricio's biggest fear is Sofia discovering his true identity and losing her friendship Forever.