England. In this country, in 1884, there is a young girl who has brothers and a mother. Soon, the parent disappears in a strange way, and her older brother Mycroft becomes the heroine's guardian. There is also a younger one, and he is a famous detective - Sherlock Holmes. Now Enola Holmes has to deal with various riddles, and find the answer to the question: where did her mother disappear to? Meanwhile, Mycroft decides to send the girl to the women's boarding house. Upon learning of this, Enola decides to flee and goes to London. There she meets an aristocrat, who has the title of viscount, and also flees from his family. The girl gets the opportunity to try to find her mother using her intuition.