Pero the Lump's Gang

A group of village children decide to secretly renovate the old mill, in order to have fun and a place to spend the summer vacation.

Pero the Lump's Gang is a 1970 adventure family movie directed by Vladimir Tadej, starring Predrag Vukovic, Berislav Kokot, Mladen Vasary. It holds an IMDb rating of 7.7/10 from 1,131 votes and runs 1h 36m.