 Believing he has killed his captain in a brawl the Russian sailor Vladimir Ivanov makes himself scarce and asks PC Rowan for political asylum. But Ivanov does not trust immigration officer Fillingham and clears out once again during transport to the immigration office in York. To satisfy his hunger he steals the lunch of Dr. Radcliffe s daughter Jennifer, who is on a field trip with her class. Jennifer wanders off with her friend Dennis and follows the Russian with a childish notion of catching him and become heroes of the day. Sergeant Blaketon starts a big search for both the Russian and the two children.