In Major Grom: Plague Doctor, a vigilante known as Major Grom must confront a dangerous and enigmatic villain called the plague doctor who threatens the city. With his unorthodox methods and incredible combat skills, Major Grom fights to protect the innocent and bring justice to the streets.

Major Grom is a superhero cop who must stop a dangerous criminal organization from causing chaos in the city. With his superhuman abilities and advanced technology, he embarks on a thrilling adventure to bring justice to the city.

19th century. A self-taught inventor nicknamed Levsha is recruited to help investigate a mechanical flea found in the chambers of Aleksandr III.