Great! The father of Stas, Dasha Lavretsova’s friend, is seriously in love with her mother. So, wedding soon! But then it turns out: the future groom has disappeared under the most mysterious circumstances! How can the lovers be happy now? Dasha and her friends start an investigation. Young detectives are ready for anything: to get hired to work at a suspicious firm? Of course! To hold off a siege of bandits in their own apartment? No problem! To set clever traps for criminals? Please! And all for one thing—to find out where Dad went.