Four girls are locked in an underground sewing workshop. On the owner's birthday, they get a chance to escape, but for various reasons, only one makes it out. She is the one who has to rethink her idea of freedom.
Single mother Maria lives with her son and daughter in a science city, which is being prepared for liquidation. She believes that her physicist husband, who disappeared six years ago during a scientific experiment, is somewhere nearby — just in another dimension. A former colleague of her husband arrives in the city in search of the missing person's records, and Maria has a boyfriend-trucker Stas, ready to take her away with her children and start a new life together. Faced with a choice, a woman can not decide to leave her invisible husband.
After another "successful" case of catching a thief, Mukhich and Kristina are fired, and they open their own detective agency in Barvikha. The partners take on a variety of cases: from spying on the mistress of a rich entrepreneur to protecting the director of an IT company, into whose consciousness someone is trying to penetrate in a dream. Mukhich and Kristina will do everything to ensure that no crime in Barvikha remains unsolved, and old acquaintances will help them in their investigations.
A shy guy, due to problems in communicating with girls, invents an android robot and goes with him to a reunion.