[1] Mixing history and fantasy tropes it is centered on light-hearted and often comedic adventures of two Slavic warriors named Kajko and Kokosz, loosely resembling both Asterix and Obelix, as well as two personalities from Christa's earlier series on Kajtek i Koko [pl] (set in the contemporary and science-fiction background).

Since 2016 two books by new authors have been published, containing collections of short stories focusing mainly on secondary characters from Kajko and Kokosz series (Breakbone, Miluś, Knavenknights etc.).

[2][3][4] Main characters in the series include castellan Mirmił, hypochondriac ruler of the village of Mirmiłowo, where Kajko and Kokosz serve as warriors; Lubawa, dominating wife of Mirmił; small dragon Miluś; benevolent witch Jaga; her husband, the good robber Breakbone (Łamignat) and the antagonists of the series: military knight order of Knaveknights (Zbójcerze), based on the Teutonic Knights, led by Hegemon, with his second in command, Hitler-like Corporal and Schweik-like Loser (Oferma).

[5][1] The stories are written in a tongue-in-cheek manner and contain light satirical elements, usually puns concerning the reality of living in Communist-ruled Poland with characters sometimes mentioning labour unions, bureaucracy, commodity shortages, and similar themes.

[20] An animated series based on the comics was released on December 1, 2021,[21][22] but it premiered on February 28 in selected territories ahead of its global debut.