Maria, Ivan and Nikita try to get the truth out of the captive Nazar by using various tortures, and the Witch Doctor puts him into a trance, as a result of which Nazar reveals the plans of the Mnishek to destroy the royal family. At this time, the Cossacks accidentally end up at a Cossack campsite for a themed holiday, which unexpectedly turns into a real battle with the Tatars.

Styopa and the Cossacks try to make it to Mikhail Fedorovich's wedding in Moscow, encountering Nazar and his men, who destroy the bridge, but they find a way to swim across the river and reach the capital. In Moscow, they save the tsar in time, Mnishek tries to use magic for his own wedding.