Kodnamn: Merkurius is a drama series about 12-year-old Marke, who unwillingly becomes the messenger between their arguing, divorcing parents. Marke, wanting to be loyal towards both parents, is forced to handle the communication between them - and in order to psychologically cope with the situation, they take the form of a hero - Merkurius - the messenger, tasked with traversing a crumbling rope bridge between the two halves of the former Union. By doing a good job, Merkurius hopes to close the giant rift that has split the planet in two and thus reunite their family.