Liza, a young and optimistic woman, arrives in Saint Petersburg for the first time, enchanted by the city's poetic bridges, legendary embankments, and vibrant bohemian parties. As the day unfolds, unexpected connections form, leading Liza to discover that love might be found in the most unforeseen circumstances.

An ambitious professor of psychiatry, Viktor Meshchersky, conducts a dangerous psychological experiment in which, under false pretenses, he locks victims and their abusers in the basement, hiding his true goals. The subsequent investigation will reveal the real motives of the professor, and will tie together the confusing stories of all participants in the cruel experiment.

The legitimate heir to the throne in exile and the son of a murdered rebel — what do they have in common? Everyone has their own goal: one dreams of taking the throne and restoring his family to its former glory, the other - to take revenge on the murderer of his father, who serves the usurpers. Young men enter into a large-scale struggle for power and honor, in which those who seemed to be friends can betray, and former enemies can turn into allies. In order to achieve the goal, both the prince and the rebel's son will have to risk the most valuable and make the main choice in their lives — to go the preordained way or to oppose fate itself.

Police Major Igor Grom is known throughout St. Petersburg for his punchy character and uncompromising attitude towards criminals of all stripes. Incredible strength, analytical mindset and integrity — all this makes Major Thunder a real superhero. His life is perfect: during the day he catches criminals with his partner Dima Dubin, and spends the evenings in the company of journalist Yulia Pchelkina. The complete idyll is interrupted by the appearance in the city of a mysterious villain calling himself a Ghost. He offers Thunder to play a dangerous game, the stake in which is the lives of ordinary people.