The film plays one of a little-known pages of the biography of Arkady Gaidar, the young man when he was appointed commander of the detachment CHON (special-purpose parts)...

A story about a guy and a girl who decided to get married.They want to have their own place and live without parents. They search for apartment to live together because they can't live without each other, they're seriously falling in love, but parents are getting tougher to deal with and they forbid her to see him. He comes up with a plan to sneak into her house pretending to be her English girl-teacher named Olga with two long braids and funny voice...