How the Cossacks Met Aliens

Як козаки інопланетян зустрічали

Also known as Comment les Cosaques rencontrèrent les extraterrestres, How the Cossacks Met People from Another Planet

Hraï, Oko and Tour come across extraterrestrials in search of oil to repair their saucer and be able to return home. Together, they cross Europe, find themselves defending Bulgaria invaded by enemies, discover an aqueduct in Italy and narrowly escape the Inquisition in Spain.