Ludmila – King Vladimir's beautiful daughter – has been known for her wayward and disobedient personality since she was a little child. For a very long time, Ludmila has been in love with a boy of her age – Ruslan, with whom she spends her carefree time and of marriage with whom she dreams. However, King Vladimir doesn't consider Ruslan worthy of his daughter's hand and wants to arrange her a marriage of convenience, with a more suitable groom. Ruslan and Ludmila will go through plenty of adventures, battles and magic in Chernomor's fairytale lands before they get hold of their right for love and happiness.

He teaches mathematics and she teaches biology. The only thing they have in common is their brilliance: they both speak several languages fluently, have a command of the latest technology, know how to use all kinds of weapons and are trained in the martial arts. These two teachers are, in fact, legendary spies.

It would seem that the life of Maria Cherkasova is developing perfectly. She graduated with honors, now she has a prestigious job at the bank. There is a groom - a promising lawyer Igor. Together they are already planning a honeymoon. But suddenly Masha catches him with the other.

A new day is a new life! The heroes get a chance to verify the authenticity of this statement, because each of them had the opportunity to radically change their fate that night. And now, with only a few hours left before dawn, they must take the first step towards a new life. But, it turns out, it's not that easy.

In the evening, a writer meets a boy crying in the park, who tells him that while playing a game he gave his word of honour to guard a gunpowder storage shed and that he couldn't leave his post. The writer helps the boy to find an honourable way out of the situation.