Available on DVD
this movie is available from amazon http://www.amazon.com/Kamenak-4/dp/B00LSFR5FE/ref=sr_1_2?ie=UTF8&qid=1440586489&sr=8-2&keywords=kamenak
as well from ebay http://www.ebay.com/itm/Kamenak-4-Kame-ak-4-DVD-2014-Czech-humor-comedy-Czech-subtitles-Region-All-Pal-/131338618738?hash=item1e94644772