The staff of the “Agency of Wonders” are once again swept up in a whirlwind of events. Yegor invents for Aya a “mind reset” scenario using shock methods, Danila heads to the Urals where he tries to unravel the mystery of his birth, Agata sets off on her last journey and ends up at the Festival of the Dead, millionaire Sergey becomes destitute, and Aya meets Thursday in his castle. What secrets does Aya’s past hide? What did Yegor learn about the murder of Dina Kaigorodskaya? By what principle and for what purpose did Thursday select employees for his strange agency? And, most importantly—who is hiding behind his mask?