Катя и ЭФ. Куда-угодно-дверь

“Cathy Quest” is a cartoon about the fascinating adventures of the girl named Katya and her best friend EF. Through the magical portal Wherever-Going Door the main characters set off on a journey, discovering new worlds and coming to the aquariums, bakeries, factories and other places where it is often not so easy to penetrate even for the adults. Katya and EF are not only waiting for the adventurous travelling, but they are also interested in different devices, mechanisms and enterprises – how they work and are managed.