"Your husband is sleeping with your student" – Olga finds such a note in one of the bouquets that were presented to her in honor of her triumphant speech at the scientific forum. Olga is a mathematician. She can easily figure out who sent this anonymous letter. Except this man is found dead. This is how a dangerous game begins, each move of which is associated with one of the Fibonacci numbers. What do they mean and how are they related to Olga's life? The answer is far in the past. Every mistake will cost the life of someone close to the heroine.
Martha's dream of becoming an Olympic gymnast is shattered because of her dishonest trainer. Now, her only chance is at the local circus, where a fight between two trapeze artists is at its peak. While her two possible partners fight for her affection, one of them will cause a fatal accident that will change their lives.
