Stas’s father has long and seriously been in love with Dasha Lavretskaya’s mother. And soon—wedding! But unexpectedly, the fiancé disappears under the most mysterious circumstances. What’s to be done?! Stas and Dasha, with a company, will have to start their own investigation. Because young detectives are ready for anything for their beloved parents. Take a job at a suspicious firm! Set up tricky traps for the bandits in their own apartment! And, of course, find out where Stas’s father has disappeared to.