Raised by a Polish aristocrat, Ivan is a young Ukrainian man of humble peasant origins. His cheeky nature pushes him to rob the Moscow Tsar of precious jewels, yet it's to a noble end: he needs the royal riches to free his mother from Ottoman enslavement. But then it turns out that the simple robbery is not that simple: Ivan accidentally steals a magical heirloom, an earring which had helped the Moscow ruler to stave off defeat. The magic earring ends up in Ukrainian Cossack Fortress, aka the Sich, what's worse - it's in the ear of the Sich leader, Koshovy. Stealing the earring from the Tsar was tricky; stealing it from the Cossacks is impossible, however hard Ivan tries to to get into their good graces. It does not help that Koshovy's right-hand man, Nazar, doesn't trust Ivan. He is also suspicious (and for a good reason) of Ivan's intentions towards Nazar's beloved Mariana. Can this get worse? It can - when the Tsar's most merciless henchman, Fedor, decides to chase and punish the thief of the heirloom personally. And the earring? - You will discover it holds more than one secret.