In his dreams Sammy is a rock star. But in reality he works and cleans in his brother Momo's hammam. Suddenly, a music label gives him the chance to become famous in a casting show. On one condition: The solo musician must form a band. So Sammy, his sister Jessi, the old temporary masseur Wolle and fat Mahmut quickly become the group "Hamam Hardrock". The audience celebrates the original newcomers but label boss Thomaschewsky wants to prevent the multicultural rockers' triumphant advance by any means necessary.

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