Movierulz is a well-known network of piracy websites that specializes in streaming and downloading copyrighted films and television series without authorization. The specific domain extension signifies Poland's country code top-level domain, though the site operators rarely have physical links to the countries whose domains they use.

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The operational model of MovieRulz is built to evade legal crackdowns. It functions as a pirate platform by uploading pirated copies of films, which are often sourced from camcorder recordings in theaters or from leaked digital copies before their official release. To make this content accessible, the network relies on a system of proxy sites and mirror domains. Because authorities frequently block the original domain names, the operators use proxy URLs—like movierulz.pl —to circumvent these blocks and provide uninterrupted access to users. These proxies act as intermediaries, allowing users from regions where the site is banned to continue accessing its library.